Mizuki has been hired to be the private tutor of Naomae kun, one of the worst student of his class.... Naomae kun is not only lazy, but is pretty much incredibly negative when facing academic studies, fact which prompts the serious Mizuki to be very diligent when dealing with Naomae's classes. Naomae is not only a bad student, but also is a little bit of a prankster, so he really isn't easy to tame when it comes right down to it.... And before she notices it, the relationship between the two has this very strange chemistry that can't be easily explained. Naomae, for his part; is quick to fall for Mizuki, and suddenly his goal changes from "getting into the best high-school" to "going to the same high-school that Mizuki", while the high-school is actually the same for those two objectives, Naomae seems to take the second phrasing of his goal much more seriously.... Yet not seriously enough.

High school girl Ibuki Wakaba yearns to be a tokusatsu hero, just like on TV. While daydreaming on the school roof she runs into real monsters and is saved by Ririe, warrior from another dimension sent to protect her. *Note: Appears to be an older short series by Kotetsu Akane that was not collected into volumes until Tubame Syndrome became popular*

Working as a team, their bonds will turn the weakest members into the fastest! The start of a unique triangle school battle fantasy! (Source: Dash Bunko, translated)

Kazuki and Towako met in their high school days and were together for 55 years. Kazuki, who cared for Towako who had dementia, was so sad that he tried to commit suicide by drowning with his wife's body. When Kazuki woke up, he was not in the afterlife but in the world of his second year of high school. Though he was confused by the time leap, Kazuki approached his classmate Towako in the hopes of being united with her again... (Source: Natalie, translated)

Makoto Misumi was an average, everyday high schooler, who found himself shipped off to another world at his parents’ whims. Upon arrival, however, he’s insulted by the Goddess for being too ugly and thrown into a desolate wasteland. He frantically searches for human warmth and connection, but can find nothing but monsters and inhuman settlers. When he finally meets companions he can trust, they turn out to be a pair of powerful perverts in a former dragon and a former giant spider! His high-octane, incredibly misfortunate trek through this foreign world has only just begun! *Source: Hanashi Media, Vol. 1*

5 boys and girls full-shuffled! 5-way love pentagon comedy! At clubhouse room 401, there gathers "anything goes" members of the culture study society. Pro-wrestling otaku Taichi Yaegashi, mysterious beauty Iori Nagase, cool Himeko Inaba, the clown Yoshifumi Aoki and fancy-loving Yui Kiriyama found the noisy but calm days suddenly come to a halt. The personality switched among the members--. The unnatural days of changinging into "someone" by getting back to "themselves" by becoming "someone else" has started!

Yamaboshi Academy’s Student Cultural Society consists of five weirdos (Himeko, Iori, Yui, Aoki, and Taichi) who just don’t fit in anywhere else. While they seem as close as friends can be, when they mysteriously start swapping bodies with one another, their bond is put to the test. Now the five friends must figure out not only why this is happening to them, but come to terms with each other’s innermost secrets, fears, and hidden crushes. Can they possibly stay friends while retaining their sanity? (Source: Seven Seas Entertainment)

*If only I could be the one to reach you...* After an ankle injury dashes Hoon’s hopes of becoming a basketball star, he begins to see a timer in the sky. He believes it’s a countdown to the day he dies, until he discovers one day that his classmate Haedam can see it too... (Source: Manta) *Note: Includes one extra chapter.*

Maki, who works for a big company, has secret feelings for one of his subordinates, his boss' son Sudou. He's been assigned to watch over Sudou, so as to prevent him from making mistakes that would compromise his brilliant future. One night, however, Sudou catches sight of Maki in Tokyo's gay district, kissing a man. Driven by his curiosity, Sudou promises to keep quiet about it... Only if Maki sleeps with him. When the two men start a physical relationship, Maki still hopes that Sudou's curiosity towards him will continue. But he'll quickly realize that it's not the only obstacle he'll have to overcome...