Raising Fairies, Starting by Taking in a Good-for-Nothing Junior Sister!

Lin Xuan transmigrates into the dating sim Immortal Maidens in a Thousand Mirrors, becoming the most useless direct disciple of Taichu Sect. Because he insists on taking in the sect's most useless junior sister, the entire sect laughs at him. No one knows that this girl with no spiritual roots will one day create her own demonic arts, rise above all under heaven, and become the sole empress of her age.

Lin Xuan can't be bothered to explain. He's taken her in, so he'll raise her. The entire sect looks down on her, but Lin Xuan is willing to protect her. She has nowhere else to go, so he'll keep her by his side. The useless girl in everyone's eyes is gradually raised by him into an empress. Those who once laughed at him eventually fall silent.

Later, the immortal master's gaze toward him starts to change. A demonic enchantress refuses to leave, and the cold sword immortal and the saintess also start flocking to his side, one by one. Only then does Lin Xuan realize that he hasn't raised just one junior sister, but a whole group of immortal maidens he can't shake off.