A fat anxious athlete gets an uninvited houseguest from Europe, they do their job together in matching outfits.
Yuri On Ice
Step-sisters meet, immediately make family dinners super awkward.
Citrus
Teenager with broken equipment joins after-school club, everyone has emotional damage and good hair.
Given
Student council members sword-fight over who gets to date the girl living in the rose garden. Also there's a lot of symbolism about eggs.
Revolutionary Girl Untea
Office worker discovers his superpower doesn't work on one specific coworker, romance is the obvious conclusion.
Cherry magic
Girl gets isekai'd into her favorite otome game and decides to ignore the male leads entirely to pursue the antagonist instead.
What is I'm in Love with the Villainess
Transfer student thinks he's joining a normal extracurricular activity. The club president has other plans for new members. learns that "club duties" means something very different here.
Yarichin Bitch Club
Student government VP doesn't understand feelings, gets a crash course from an underclassman.
Bloom into you
Socially anxious student spends entire year trying to say "hello" to his crush. Somehow this takes 100+ pages.
Go for it, Nakamura!
Bullied girl gets magical powers from a creepy stick figure website. Makes friends with other traumatized girls.
Magical Girl Site