Rakuin no Monshou - Volume 8, Chapter 4: Submerged

Zhou Yu, a reclusive otaku, who did not like to go out of his house, was one day forced out of his house by a series of unexpected events.

- Description from Novelupdates

Son of the Senior Chancellor, Luo Wei, loved the wrong person in his past life. This mistake caused his entire family to be wiped out, and in the end, he was cast down as a pleasure slave, and died in the wilderness during the depths of winter.

Xiao Mengxin accidentally entered the Lixingshe Secret Service.

The only ability is to accurately identify who is the hidden Japanese.

I don’t understand anything else…

As a result, I seemed to be walking astray while walking?

- Description from novelbuddy