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～ (Associated Names)

Obino Kazuya was doing multiple jobs so he could save up 30 million by the age of 29 and retire. After getting kidnapped by his internet poker friend, who turns out to be a Maou, he became her pet/caretaker.