Love Apartment: The Strongest Xiao Hei

Bai Kaishui transmigrates into Love Apartment and unexpectedly finds himself inhabiting the all-purpose Xiao Hei, gaining mysterious powers that let him travel between worlds.

Zhuge Dali: "He's the person I love most! (｡･ω･｡)ﾉ♡"

Zhang Wei: "What a great buddy! He found me a wife!"

Hu Yifei: "He's a wonder."

Zeng Xiaoxian: "He's a wonder."

Lu Ziqiao: "A man of the world knows the meaning of loyalty."

Chen Meijia: "Ziqiao's right."

Kari Sauce: "You're the best, big bro!"

Zhao Haitang: "Why was I born when Yu was already alive!"

[Love Apartment 5 + author's original settings + the System may or may not matter + multiple worlds + one female lead]