Boku no Onee-chan wa Sekai de Ichiban Tsuyokute kakkoiin da. | My Onee-chan is the coolest and strongest in the whole world.

Boku no Onee-chan wa Sekai de Ichiban Tsuyokute kakkoiin da. | My Onee-chan is the coolest and strongest in the whole world. cover

[Riboshika Unit (リボシカ)] 僕のお姉ちゃんは世界で一番強くてかっこいいんだ。[英訳] [DL版]