Girls Bravo: Second Season

Small, timid, and bullied by girls his whole life, Yukinari Sasaki has a body that's essentially given up on them entirely — any contact with a female sends him into full hive-breaking-out mode, which makes high school pretty miserable. Then he falls through a bathroom and lands on Seiren, a mysterious world floating invisibly near Earth where women outnumber men by a staggering margin. It sounds like a dream setup, except Yukinari's allergy doesn't care about location. The one exception is Miharu, a warm and cheerful girl from Seiren whose touch doesn't trigger anything — and who ends up following him back to Earth, moving into his house, and turning his already chaotic life completely sideways. The comedy comes from watching someone with a literal female allergy suddenly surrounded by more girls than he's ever had to deal with, while Miharu navigates Earth with zero idea how any of it works. It's lightweight, a little absurd, and leans hard into the romantic-comedy chaos without taking itself seriously for a second. If you liked To Love-Ru or Nagasarete Airantou and just want something easy and fun, this fits that same slot. It's 13 episodes from 2005, based on a manga, and it doesn't pretend to be anything other than a breezy harem comedy with a goofy twist on the isekai setup.