Masaki Hoshikawa

The eldest son of the Hoshikawa household. His father, Piroshiki, was sloppy with his legal will, so after his death, Masaki inherits all his Cosmos Health Center buildings. Masaki decides to tear down the buildings to clear the family name's reputation. He is pragmatic and doesn't like things that can't be bought with money because he would be unable to sell them once he doesn't need them anymore.