[Musekinin (Saruo)] Tsukasa and Senku Become Unrelated Brothers in a Modern AU (Dr.STONE)

Senku Ishigami and Tsukasa Shishiou discover they are unrelated brothers, sparking a series of comedic and awkward encounters as they navigate daily life together. Their interactions range from surprising visits and puzzled reactions to intimate moments like sharing a bath, highlighting both their rivalry and unexpected bond. The story blends humor, tension, and the charm of their contrasting personalities in a modern setting.