Douluo Dalu 2: The True God King - Chapter 269: [DD2]:

In the Holy Grail War, who holds the artifact and beats everything?

Gilgamesh! It’s yellow hair! It’s yellow hair!

In the face of catastrophe, who can stand up and save the world?

Kurosaki Ichigo! Uzumaki Naruto! It’s yellow hair! It’s yellow hair! It’s yellow hair!

In front of the heroine, who can counterattack, the bull-headed protagonist?

It’s yellow hair! It’s yellow hair!

Who is Huangmao?

I am Huangmao!

- Description from novelbuddy

The Student Council President’s Secret Laid Bare (生徒会長のセキ裸ラな秘密) is fairly standard 2D Dream Bunko fare but with an exhibitionism theme.

Basically, it’s about a guy who discovers the student council president is an exhibitionist and gets roped into helping her with that fetish.

In this world, orphans or just anyone without any hope for this world can apply to become a “walking target”. Their sole purpose is to be a practicing dummy for the students of the sect who train to become “Demon Hunters”. These students need “walking targets” to test their training on living, walking beings of flesh and blood.
In exchange, they will be provided with food & shelter.
Their existence value is lower than a slave, but if they manage to survive a few years they can receive a life long pension.

Xiao Han is such a “walking target”. One time he witnessed a powerful Demon Hunter disposing a demon. When the demon died, a fragment of the demon that managed to escape entered Xiao Han’s heart. No one saw that, and even Xiao Han himself only felt some discomfort for an instant.

But that thing in his heart soon gave Xiao Han visions, and the first one is of a cultivation method which allows Xiao Han to absorb damage to enhance his body. A perfect cultivation method for a “walking target”.

- Description from Novelupdates