Ore wa Ryouri to Kaji de Maou wo Honenuki ni Suru: Isekai kara Hajimaru Shufu Musou
Demon Lord’s Pet·俺は料理と家事で魔王を骨抜きにする ～異世界から始まる主夫無双～
A man works several jobs to save 30 million yen by 29 so he can retire. He is kidnapped by an online poker acquaintance who is revealed to be a demon lord. He is taken in and becomes her pet and caretaker.