Akuochi Shita Imouto o Tasukeru Tame Imouto Sokkuri no Super Heroine ni Sareta Ore

悪堕ちした妹を助けるため妹そっくりのスーパーヒロインにされたオレ, My Sister's Been Corrupted by Evil! The Only Way to Save Her Was to Turn Me into a Female Superhero That Looks Just like Her!