Bousou Kareshi, first story

Hoshi no Yakata

It had a few i think...i don't remember. it's hard yaoi, S&M, and bondage...

another is Sadistic Boy. It has it one or twice.

There's an old saying my late grandma taught me. When you're ten, they call you prodigy. When you're fifteen, they call you a genius. Once you hit twenty, you're just an ordinary person. About three years until I'm ordinary. Man... I can't wait to be ordinary.

Koiyami Archive

chap 3& 4

Gattendou Tenmatsuki
Leopard Hakusho
Kondo Koso Honki! - 1)
Not for Sale! - 5) Love Cocktail

I have the simplest tastes. I am always satisfied with the best.

• Oscar Wilde -

Does anyone know this manga?
There was a yaoi manga it was like either a one shot or an extra chapter from a different manga all I remember was there was this guy and he needed money and he needed a place to live and a guy he knows is like researcher and he needed someone to take an experimental drug I think it was a aphrodisiac and anyway they started living together and he was feeding hip the medicines and having sex or sexual like things. One day the guy was at work and coworkers were saying how his skin has been looking really nice. He realized that yeah he has been feeling healthy and stuff. He runs into a friend and he saw the researcher guy saw him at a store and just dumped a whole bunch vitamins in a basket to buy. It turns out he has been feeding him vitamins and not an experimental drug. He confronts him angry that he was being duped. Around the end the researcher/doctor person confesses that he liked him and used the drugs as an excuse to sleep with him.

Is it the one mentioned in my reply, here?

Yeah I still cant find it so im trying to broaden my search