我が家の王様にキメセク・リベンジ 常に上から目線の偉そうな姉に復讐のつもりで100倍濃縮された性欲増強剤を与えたら、ガンギマリ雑魚マ×コ堕ちし、弟ながら勃起した。神木麗

As the sole breadwinner of the household, Kamiki Rei is effectively the “King of the house,” while her brother Yuta is nothing more than a bum. Fate takes a turn when an opportunity for revenge falls into the brother’s lap… courtesy of a friend who asks him to hold onto some goods for a while… Only problem is that he ends up overdoing it.