Makoto has watched the graceful Kotonoha reading on the train every morning without ever speaking to her — content to admire her from a distance. When his classmate Sekai spots Kotonoha's photo on his phone and appoints herself matchmaker, things move faster than Makoto planned. Kotonoha opens up; barriers fall. But Sekai grows quiet and distracted, as if caught in her own private storm. Three hearts. Three different emotions. One slowly unraveling situation.