Tsukaretemasen Tsukaretemasu!
(Ch.1-5, 7.5) I'm Not Tired, I'm Possessed! - Koushi is an overworked teacher who one day confiscates a strange book and accidentally summons a small incubus named Marin. Koushi is sure this is all a hallucination, but since Marin says he doesn't believe in sex without love so he will simply disappear, Koushi decides to let it be. But life with Marin is so comfortable that when the time comes, Koushi is reluctant to let go of him. Now he just needs to realize that Marin is no hallucination. My only complaint here is that big Marin feels like a totally different person from little Marin. Trigger warnings: secondhand embarrassment. (Ch.6-7) Approach from Above - Delinquent Kumagami saves the rich kid Asou from a train groper one day and ends up befriending him. He realizes that Asou has never really had a friend and uses money to solve all his problems, so he tries to show him some normal fun, but he worries that the two different worlds they come from are too far apart. Trigger warning: groper.
Shishi ni Hire
High school teacher Haruchika lives with his former student Kiyomasa, who had a troubled upbringing that led Haruchika to offer his home if Kiyomasa was ever in need. Kiyomasa turned up years later, and they've been living together ever since. But when Haruchika's current troubled student, Asako, gets help from Kiyomasa and starts following him around, it interrupts their happy life and makes Haruchika wonder what he's really bringing to the table in this relationship. I liked that Asako was an interesting side character not just used for jealousy. No trigger warnings.
Can a Demonic Teacher Be This Lewd?
Touhou is teacher known for his demonic sternness, so he really wants to keep it under wraps that at night he hires male prostitutes to accompany him. When he hires a new man and his former trouble student Miyamoto shows up, Touhou is eager to get him to leave, but Miyamoto insists on finishing the job. But once the night is over, Touhou starts to worry about his former student and what led him to this lifestyle, so he calls Miyamoto again, leading them to begin meeting regularly. But Miyamoto, who used to hate Touhou for his sternness, has found that his feelings are changing. Trigger warnings: sex work, S&M.
Gray to Blue no Ai Made
Koutaro is a high school teacher with a marriage on the rocks as his wife works overseas. Koushi is his father-in-law, who Koutaro recently learned is gay and has a somewhat messy love life. Sayotani is Koutaro's gay student who was recently helped by Koushi and has fallen in love with him, despite the very large age gap. This is the story of these three men figuring out love and relationships. Honestly, the age gap is a lot, but I wouldn't mind it if Sayotani was just out of high school. Still a very interesting and unique story. Trigger warnings: violence, cheating, statutory rape(?).
Mistress at a secret base
Kon'ya, Hokenshitsu de Guchagucha ni
Tanaka is a straight-laced teacher who secretly has a folder of pictures of the school nurse, Shirahane, which she uses while pleasuring herself at night. She's mortified when he finds out, but he's into it and they start dating. It's been a while since I read this one, but it was fine, I think. Trigger warning: threat of blackmail
Kawaii Sensei
English teacher Miyata has never gotten along with jock types, so when he's assigned to supervise the kendo club with Samehara as the coach, he thinks he and the other teacher won't get along. However, spending time with Samehara, he can't help but find himself interested in the way Samehara always seems to be wearing a mask to keep others from getting too close. When he finally uncovers Samehara's secret, he's gay, Miyata is more interested than ever and immediately starts pressuring Samehara for a relationship. But Samehara can't trust Miyata's flirty nature, especially when he's long since resigned himself to a life without love. No trigger warnings.
Apron Yankee!
“Yankee” (delinquent) Taiga awakens from a 3 year coma to find the beloved aniki who always fought by his side has gone off and disappeared! Taiga tracks Ryuusei down as a kindergarten teacher, but Ryuusei is determined to keep Taiga out of his life, while Taiga is determined never to leave his aniki again. Trigger warning: violence (street fights).
Ninth Life Love