I Fell in Love with My Sister's Boyfriend
guy's one-night stand partner returns 3 years later as his sister's bf...(story is from bro's point of view) Would be a comedy if not for the creepy sister, whose possessiveness of her younger twin brother borders psychopath.
My Darling Signed In
grr my comment didn't save...welp, college guy plays cute female character in an online game to gain favors from male characters, got found out by in-game husband, and they started going out for real, albeit awkwardly. Meanwhile, girls in college swoon over the three handsome guys, not knowing the love-triangle that's beginning to unravel.
Unripened Expression
This is something straight out of a dating sim game -- the main character is surrounded by 4 potential love interests: the tall and handsome childhood friend and his first love, the friendly vice class rep who is a fierce fighter, the happy-go-lucky mood-maker friend, and the lone wolf who has been very supportive of him (a tsundere?). Who will he choose? My predictions are either the childhood friend or the lone wolf, because the other two characters are too one-dimensional to be the one he will end up with.
Heesu in Class 2