Maybe a Fake Gintama - Chapter 7: Sweet Dreams and Nightmares

In order to live he must get close to girls, what kind of rule is this? Tang Zheng possess the Nine Yang Saint Body, a rare body constitution that is hard to come across within a millennium, yet he must absorb pure Yin energy to stay alive. In order to live, he will fight! Absolute campus belles, goddess teachers, charming housewives, haughty lolis… all kinds of woman walk into his life causing him to be surrounded by beauties!

On a dark and windy night, the legendary military hero Qin Yu found a stunningly beautiful and drunk CEO. From then on, Qin Yu's life was completely transformed...

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates

“Teacher Zhu, the retake student from your class has arrived.”When the security guard brought Chen Nan to the entrance of Class One in the third grade, Zhu Keren's beautiful eyes instantly revealed a look of disbelief, but more than that, there was panic and unease.She hadn't expected that the young man she had encountered on the bus would turn out to be a student in her class.This made her scalp tingle, and she felt almost suffocated.After all, she was an advanced teacher at the school, whose reputation and teaching ability were well recognized.Yet previously, she had behaved like a slut, taking the initiative to grab Chen Nan's vital part, even seeking pleasure in her own private area.