転生魔術師が運営するタワーダンジョン　～罠にかけてエロいことをしよう！～ (Associated Names)

An otaku with a hobby of masturbating was reincarnated as the son of a great mage. As soon as he was born in this life, he vowed with a goal of embracing women till his death. That said, when he became 20 years old, the Demon Lord which was sealed by his ancestors revived, and…