Koikimo (Season 1)

Koikimo (2021) is a romantic comedy anime you can watch online on iFILM. Ryo Amakusa is a young, successful businessman who never has to chase anyone. Then a high schooler he's never met saves him at a train station, and the lifelong flirt falls hard for the first time.

Her name is Ichika Arima, and she happens to be the best friend of Ryo's little sister. Every confession he throws at her gets the same reply: creepy. He takes the insult as affection and pushes harder; she fires back with full otaku-tsundere attitude. The voice work from Toshiyuki Toyonaga and Yurie Kozakai keeps the back-and-forth sharp.

Adapted from Wataru Yoshizumi's manga, the show runs a tidy twelve episodes — a quick watch for anyone who wants a tsundere romance without a forty-episode commitment. Stream Koikimo (2021) online on iFILM.