Key:
Completed
Ongoing
Dormant. No activity in over a month. I'm always willing to restart a dormant thread.
False start. As above, but only managed a couple of rounds of posting before going dormant.
Dead. I'll only use this if there's no chance of a story continuing.
False start, dead. Combination of the two above.

Secret Reading Room: Severity stumbles onto the space in the library Kakumaoh has set up as his personal reading area. The privacy of the area makes it a good place for other activities where one doesn't want to be interrupted, too.
A Test of Strength: Ayame and Kakumaoh had been hunting each other for a few days. The inevitable confrontation finally occurs in the forest.
Pre-Class Shower: Kireina just wanted to take a shower after a workout. Kakumaoh decides to give her another workout, however.
A Run in the Woods: On a late evening run, Jag encounters Kakumaoh in the forest.
"The Rape of Innocence" A Play: Cassie is the lead actress in a play for her drama class. The lead actor isn't the famous actor in a costume that the teacher was pretending it was, though...
Welcome to Shokushu: Rena has the misfortune to be assigned to the dorm room which Kakumaoh had been using to spy on new students.
Up On the Roof: Violett tries to take a break on the roof of her dorm. Unfortunately for her, she's not the only one doing so.
Tunnel Hacking: Saira decides to explore the steam tunnels under the campus, only to learn just why they're unusually large.
Unpacking: Kakumaoh teaches Miko why you shouldn't undress with the curtains open where anyone could see you.
After-Class Activities: Tessa falls asleep while staying after class to work on an assignment. The curfew is there for safety reasons, you know...
No Rest for the Frigid: Zoya uses her ice abilities on the window of her room. Kakumaoh notices this and decides to investigate.
A Page Out of a Horror Novel: Diana tries to hide from Kakumaoh in a small shack in the woods. The shack is no protection against a determined demon, though.
A Wolf in the Stacks: Kakumaoh has been observing Tatiana for a while. In the library, he decides it's time to do more than just watch.
Spectator on the Field: Natsumi was just running laps in the gym after getting to class very late. Kakumaoh decides to break the monotony of her punishment.
Beach Blanket Beastie: Kakumaoh thought he'd worked out a way to capture someone in an open area without attracting too much attention. Persephone happened to be on the beach at the right time to help him try it out.
Welcome Home: If you know where a student lives and can 'convince' a prefect to help you out, it's easy to prepare a surprise for when she gets home, as Kakumaoh demonstrates to Sachi.
A Late Run: Raven encounters Kakumaoh while running late on the track. Despite the aid of her book, her magic isn't strong enough to do more than annoy him.
A Quiet Moment: Kakumaoh was just reading in a forest clearing when Rachel happened upon it. The book can wait; it won't go anywhere.
Failed Vengeance: Zilva tries to avenge Raven on the track. Her alchemical weapons prove as effective as Raven's spells had.
Black Oni of the Forest: Madoka passes near where Kakumaoh was reading in the forest. Another book to get back to later...
A Night Stroll: Ishtar encounters Kakumaoh when trying to return to the dorms after staying late at the library to finish an assignment.
Arrivals: Kakumaoh had almost given up on the prom when Suzi arrived. She's rather full of herself, but it shouldn't be too hard to take her down a peg once the signal comes... (This never had a chance to branch off to a separate thread.)
Getting Settled In: Nola and Jojo were just getting to know each other as roommates when they got an uninvited guest.
Forest Encounter: Katy decided to go for a run in the forest. You'd be surprised just how many hiding places a monster can find just off the paths.
Music To His Ears: Bianca was trying to practice a difficult piano piece. However, Kakumaoh would rather perform a duet in the key of 'H'.
Dressing In the Class: After getting detention for being out of uniform and late to class, Nene sneaks into a classroom at night to try on some outfits. Just because classes are long over for the day doesn't mean the building's unoccupied...
Wet and Wild: A problem with the shower in her room forces Lucia to use the communal showers. She's not quite the only one there at that time, though.
Going for a Jog: Elayne was just going for a jog in the forest when she met one of the island's non-human residents.
Looking Through Some Books: Kim was just trying to do some reading for one of her classes. You know, those headphones can make it hard to hear someone sneaking up on you...
Night Classes: Katy sneaks into a classroom, trying to recover a vibrator her teacher confiscated. Kakumaoh sneaks into a classroom, looking to have some fun with an isolated student. Guess which one actually gets what they're after.
Doing Laps: Emma was scheduled for some solo swimming practice, but Kakumaoh decides to keep her company.
Moving In: Nell left the door to her dorm room open while moving in. If she'd been here longer, maybe she'd have learnt why this was a bad idea before Kakumaoh taught her.
In Pursuit: Crystal went into the forest to try to find evidence to support her claim that she'd been raped by a monster. Another monster attack probably wasn't what she had in mind...
Meeting the Neighbor: Curiosity and boredom lead Kaede to investigate one of Kakumaoh's lairs. The two monsters quickly get to a cure for their boredom.
The Mata Hari: Ishtar was trying to rehearse her part for a play when an unexpected audience member decided to join the performance, rewriting the script to suit himself in the process.
First Impressions: Elena was trying to find a new student orientation meeting when Kakumaoh decided to give her a more personal introduction to the school.
The Advantages of Not Planning Ahead: Kakumaoh had heard stories of the 'orgy room' and decided to investigate on a whim, but found no-one in the room at the time he arrived. Fortunately for him, Airi was in her room with the door open, so the trip was far from a waste of time.
Snowy Holiday Fun: A snowfall created by the administration draws several students out for a snowball fight and other activities. Kakumaoh is waiting on the outskirts for the chance to catch a couple of students for some of those 'other activities'.
Unhappy Holidays: Anne was just trying to get away from the cheerfulness of holiday celebrations. Being alone and away from the campus doesn't work out too well for her.
That Sandy Feeling: Kaila wanted to spend some time on the beach and wasn't expecting an overly aggressive admirer of her figure to show up.
Examining the Facilities: Khrystyna decided to do some exercises along in the gym. She's not alone, though, and Kakumaoh had some other exercises in mind for her.
Just a Normal Day at the Beach: Thalia was just trying to enjoy some time on the beach. Seeing her in her bikini was just too tempting for Kakumaoh, though.
An Exhausting Workout: Rain forces Melanie to work out in the gym. She might even have got in the workout she'd intended if Kakumaoh hadn't seen her heading that way and got there first.
A Longer Night Than Expected: Alynia hadn't planned on any visitors tonight, but Kakumaoh took interest in her and 'convinced' a prefect to give him a key to her room.
Lazy Day: Sable had some ideas for how Amy could help cure her boredom. Kakumaoh happened to see the two students and decided to join them.
Taking a Stroll: Fionna decided to take a walk around campus. She was looking for the library or a better place to read, but that wasn't what she found.
Paradise Peril: Molly and some friends decided to spend the day at the beach. Separating from the others to read while they went off to find a volleyball net made her a tempting target to Kakumaoh.
Secluded: An earlier encounter had made Rhaine wary of the beach, and she thought that the lake hidden in the woods was a good alternative. Then she found out she wasn't as alone as she'd thought.
Strolling Around the Beach: Helia decided to go to the beach for a study break. She's still new here, so it's understandable that she didn't expect to encounter anything like Kakumaoh.
Creations: Daphnee convinces the shop teacher to let her stay between classes to work on a puppet she's building alone. Being alone where a monster that's taken an interest in you can trap you is generally not a good idea here, and today is no exception.
Reliable: Kakumaoh agreed to let Daphnee go sooner than he'd planned in the shop room if she returned that evening for a longer encounter. He had plans for how to find her again if she didn't show up, but she's good to her word.
New Experience: Riley was trying to spend some time alone with her fantasies in the library. She'd set up in one of the nooks that were mainly intended for the use of the island's guests. Kakumaoh's willing to share the space with her, though.
The Devil You Know: Encountering Kakumaoh while running from Birch, Rhaine decides she's better off with the guest she's already encountered than the complete unknown.
Painting a Picture: Kakumaoh has had his eye on Mildred for a while, and decides to take her when she's alone working on a painting. His arrival interrupts Etolie's assault on her, although Mildred is no happier with her new situation. Hey, Kakumaoh would've made sure Etolie also experienced his attention, but Mildred was starting to get loose.
An Afternoon Nap: Nola decides to take a nap in an out-of-the-way part of the forest. Of course, when you do things like that, you run the risk of someone finding you and taking advantage of the situation…
Two Can Play: An encounter with Etolie and Princess Tidal has left Rhaine convinced that her life is ruined, and she turns to Kakumaoh as someone to talk to about it. The demon offers to help her get revenge on the other student, seeing both an opportunity to secure his hold on her and a second chance at the one that got away.
Experiences: Bria manages to get hopelessly lost on a trip into the woods. Fortunately for her, she's been followed by someone who knows the way out, but there is a price…
Nosey New Student: Nin was sure that the campus was hiding some secret and decided to do some snooping around to find out what it was. What she found was far stranger than she'd expected.
Three's Company: Rhaine decides to introduce her girlfriend Dani to Kakumaoh. Making the whole thing a surprise to her might not have been the best idea, though.
Tying Loose Ends: Vanessa and Stephanie were trying to cement their relationship after a chance meeting in the forest. Kakumaoh's presence complicates things when they return to Stephanie's room, though.
Looks Sometimes Deceive: Kakumaoh finds that the 'student' he was stalking isn't what she appears to be. Not that it really matters, since the succubus Tsukania is anything but averse to his intentions.
Good Girls Go to Heaven, Bad Girls Wind Up Here…: Tiffany decides not to go straight to campus for orientation. Nichol tries to convince her otherwise, but isn't willing to explain exactly why. Kakumaoh arrives to demonstrate what she wouldn't say, though. (Note: this story never actually happened.)
Atypical Lesson Plan: Renetta was in an unused classroom, trying to work out what to do about a series of encounters, when Kakumaoh showed up to add another such encounter to her list.
Wake Up Call: Olivia was taking a shower after a late night to get ready for her physical therapy session when Kakumaoh showed up to give her a quite different physical workout.
Behind the Scenes: The school offices were off-limits to students, making them an unlikely place for monsters to show up. Unless that monster has set his sights on the head girl Vera and decides to ambush her when she updates some student records.
It Was Supposed To Be Simple Practice: Lisa thought that the gym was empty when she went there to practice her martial arts. Kakumaoh shows her that it wasn't completely empty when he introduces her to the school's secret.
Burden of Proof: Tiffany returned to the forest near the docks in search of evidence whether her visions of being attacked was a dream or a memory. What she found was pretty conclusive.
Choosing a Teammate: Stephanie didn't think anything was amiss when Ms. Gruber made her clean up the gym equipment herself; she'd not been doing all that well, and the teacher did have a tendency towards being a bit of a petty tyrant. What she didn't know was that it was done at the request of someone who she'd met before and who wanted to have his way with her again.
Shelter From the Storm: Kakumaoh had thought the day was going to be a complete waste when he wound up stuck in a cave during one of the island's rainstorms. Then a familiar face took refuge in the same cave; one who wasn't really averse to passing the time the way he wanted to.
Lost: A heavy fog and a brief storm leave Rebecca near the mountains, where she finds an apparently abandoned picnic basket set up on o rock. While Kakumaoh wasn't the one who set this probable trap up, that wasn't going to stop him from taking what it snared.

Updated 2/28 and reformatted.

Rather overdue update 9/9.

Updated and rewritten 5/16.

Updated 9/3.

Updated 7/1.

Long overdue update 4/17.

Update and minor formatting change 11/1.

I really need to do this more than once every 18 months or so...

...He says before going almost 4 years between updates...