Dokuzetsu Shoujo wa Amanojaku: Kabegoshi nara Sunao ni Suki tte Ierumon!

The beautiful and talented Yukina-senpai is always being mean and demeaning towards her neighbor Keita-kun when they're together. But Keita can hear Yukina talking to herself through the wall when she's alone. "I got to spend so much time with my favorite Keita-kun today! I will confess to him tomorrow, for sure!" A love comedy about a girl with a poisonous tongue leaking her true feelings!

(Source: Hobby Japan, translated)