Ship of Theseus.

テセウスの船

Ship of Theseus (Japanese: テセウスの船, Hepburn: Teseusu no Fune) is a Japanese manga series written and illustrated by Toshiya Higashimoto. It was serialized in Kodansha's seinen manga magazine Morning from June 2017 to June 2019, with its chapters collected in ten tankōbon volumes. A ten-episode television drama adaptation was broadcast on TBS from January to March 2020.