Isekai Tensei Soudouki

Balud Cornelius is the son of a noble of the Mauricia kingdom and inside him also dwell the souls of the stingy warring states commander Okasanai Sadatoshi and animal ear otaku high schooler Oka Masaharu. With these three souls in a single body, he can exhibit extraordinary abilities when it comes to combat or managing the domain. Official Manga