Soukyuu No Shihai-Sha ~ Isekai Oppai MusoudenSoukyuu No Shihaisha: Isekai Ni Tensei Shitara Sekai No Oppai Wa Ore No Mono! ; 双窮の支配者 ～異世界おっぱい無双伝～

Hanakizawa Haruzawa, a very normal high school student, gets reincarnated into a new world because of an accident. A goddess tells him [I want you to save the world that is dominate by magical beings]. She then gives him a power called [The Double Sky Leader]. And this ability grants him the ability to manipulate boobs as much as he wants! How will the story of Haruzawa–who lives in a world with princesses, female knights, female executives, cat eared girls, and other mesmerizing women–unfold!?