Shinwa Densetsu no Eiyuu no Isekaitan - Volume 1, Prologue

Su Wen transmigrated and became the Prime Minister’s son, possessing both power and money.

Ji Liao was particularly distressed lately. He had been “sexually harassed” for no reason. Moreover, the other party was a man! Never mind that it was a man but it was well-known class grass [T/N: Refers to the best-looking guy in the level] and school bully——He Cheng Ming!

– He Cheng Ming in front of others: “You wanna f*cking die?” “Better shut your mouth!” “Get lost! As far as you can!” He Cheng Ming in front of Ji Liao: “Baby, you smell so nice~” “My dear, you’re so sexy!” “I’ll always listen to you. Kiss me okay?”

– Experienced Overbearing Perverted Seme VS Novice Shy Cowardly Uke

- Description from Novelupdates

In a distant future, the empires of mankind span the galaxy, and glorious Earth has devolved into a peripheral backwater.

In Shanjing city in the Asian region, Wang Zheng’s dreams of becoming a mech pilot are crushed when his college entrance exam genetic score turns out a pathetic twenty eight, barely above an animal.

To make things worse, people get the impression he attempted suicide after being rejected by the campus beauty.

Then the closest thing to a family he has, the old man in the book store across the road, goes missing, leaving him only a mysterious birthday present.