Synopsis: (Slice of life + Single female lead + Sweet romance + Transmigration)

Li Shuyi, an ordinary sophomore, encountered a... a white, fluffy little thing drooling over a roadside stall on his way home from get out of class one day?

Kiana: Um... I'll pay you back, but could you let me stay at your place for a while? ╥﹏╥

Li Shuyi: Um, I'm a guy...

Kiana: I...I believe you're a good person! (oﾟ▽ﾟ)o

Li Shuyi: ......

(Slow heat + time travel + previous civilization + Mei Yi single female lead + main plot)

"Haha, I found you, Mei!"

Mei pouted in frustration: "Oh, you found it."

"I have 'Mei's radar', I can find you no matter where you hide~"

"I don't believe it unless we play another round!"

"Okay, let's play another round. This time I'll count and you hide."

......

"You said...you wouldn't lie to me..."

"You...big liar!"

She held the photo tightly in her hand, as if it was her only support.

"You said... you would come back... you said..."

"Achen...where are you..."

......

He promised everyone that he would bring back the girl who was as beautiful as a flying flower;

He promised everyone that he would try his best to leave more fire for mankind;

He promised everyone that no matter how much it cost—

Humanity...will definitely defeat the Honkai!