Hazama Sandwich

Riri's hobby is observing other people, as she has the power to see other people's degree of feeling for each other. Every day she enjoys watching from afar... but that was supposed to be it! When Riri's friend Yosai confessed her feelings, things got complicated (?), as Riri found herself caught up in a messy relationship...! (Source: MangaTime Kirara Forward, translated)