Honkai Impact 3rd: Sorry, Theresa. It Won't Happen Again

A female-dominated Honkai Impact 3rd fanfic. The male lead has an incubus constitution, but impeccable morals.

Theresa: “You mean Anna? She's Xiao Tian's older sister. They're not related by blood, but Xiao Tian says she's a good sister who's always doted on her. Xiao Tian's about to get engaged to me, and I'm sure she'll be thrilled.”

Anna: “What?! I raised you as my child husband for ten years, and now you tell me you're getting engaged, and not to me! Do you know how green I feel right now?”

Luo Routian: “I'm sorry, Sis. You're a good person. Hey, what are you doing? Calm down!”

Anna: “Calm down? You expect me to calm down? You're about to put horns on me! I can't take it anymore. I'm having you today!”

Theresa: “You mean Rita? She's really nice and takes such good care of people. She even gave me a bitter melon hat as a present, saying its color suits me perfectly.”

Luo Routian: “Rita, this is how you take care of me for Theresa? How can you live with yourself?”

Rita: “Lord Xiao Tian, don't be so angry. I only wanted you to see if the bed was comfortable.”

Kiana: “What? Himeko, you're saying the beauty I've been chasing all this time is my auntie's husband? Wait, he's even younger than me. Isn't my aunt robbing the cradle? Himeko, help me convince them to get divorced! Not that I have any ulterior motives. I just don't think they're right for each other.”