Isekai de Kojiin wo Hiraita kedo, Naze ka Darehitori Sudatou to Shinai Ken

Synopsis:

Masatsugu ended up being of the lowest possible caste because he was summoned from another world by a hero. This boy, who has no more than basic skills, will soon be in charge of a beautiful orphanage! However, his annoyances only get worse when he discovers the building in ruins and is required to pay off the enormous debt that the previous director left behind! He has no time to rest from all the scumbags who are threatening the orphanage, and that's not all! Can Masatsugu and the vagrants safeguard their valuable home?