Boku no Kokoro no Yabai Yatsu: Love Comedy ga Hajimaranai / Опасность в моём сердце: Ромкома не будет!

This time around, we follow Kana Ichikawa, Kyoutarou's big sis! She's got a ton of gal pals, but she's never had a guy friend before, let alone a boyfriend. She's given up on ever being popular with the guys, and is just trying to focus on living her best life. But it seems maybe there's someone harboring secret feelings for her after all. Maybe now she'll finally get to experience the young love she never got as a teenager?

(Source: Seven Seas Entertainment)