3-gatsu no Lion

Seventeen-year-old Rei Kiriyama has been a professional shogi player since middle school, an achievement that gives him financial independence without freeing him from loneliness. He lives alone in Tokyo, separated from an adoptive family tied to painful memories, struggles to connect at school, and watches his professional results become increasingly unstable.

His days begin changing when he meets sisters Akari, Hinata, and Momo Kawamoto, who welcome him into their modest home and treat him like family. Rei tries to keep his distance so he will not become a burden, yet he keeps returning. Between demanding shogi matches and the warmth waiting across the river, he begins learning something harder than winning: how to let himself belong to other people.