BFF: Best Friend Forever

Aizawa-kun, a shy and self-conscious man, is secretly in love with Risa Shiomi, who works with him at the café where he works part-time. However, she seems to be interested in the handsome manager, Rion Shirakane. Just when Aizawa is about to give up on his love that's out of his league, something extraordinary happens...? (Source: Shogakukan, translated)