ONIMAI: I'm Now Your Sister!

Mahiro Rings in the New Year (1x9)

Air date: Mar 02, 2023

It's Christmas and Mahiro is shocked to hear his own little sister has a date. Unable to shake his unease, he follows her through the festive hustle and bustle in secret, with Momiji as his escort in tow. Who could Mihari possibly be meeting with?