Boku no Otonosama

The only way to make the possessed lord go to heaven is to master the 48 moves! One day, Natsuki, a high school boy, is possessed by the spirit of the lord he served in a previous life. The two had vowed to master the 48 moves together before his death, but they died together without fulfilling their promise, and the lord said that he could not be reborn until he fulfilled his wish. The days of Natsuki and Otono-sama's deep 48-moves strategy begin.

(Source: Media Do International/Kobunsha)