Suki tte Ienakute Shinu!

Akari, a pessimistic girl who lives her life always expecting the worst, finds herself enjoying hanging out with Mikage-kun, a friend her younger brother brings home. She would like to get to him better so they can be friends, too, but…!? A super clumsy age-gap love story about hiding her true feelings!! (Source: Betsucomi, translated)