Sokushi Cheat ga Saikyou Sugite, Isekai no Yatsura ga Marude Aite ni Naranaindesu ga.

Alternative titles:

• My Instant Death Ability Is Overpowered
• My Instant Death Ability Is So Overpowered, No One in this Other World Stands a Chance Against Me!
• Sokushi Cheat
• 即死チートが最強すぎて, 異世界のやつらがまるで相手にならないんですが.
• 秒杀外挂太强了，异世界的家伙们根本就不是对手。