【Appetite】Migawari Kanojo – I’ll become a bitchy gal to protect my best friend! ～Japanese

Story
[What, Sui-chan got a boyfriend?]
I received a shocking confession from my best friend, Akemi Mizuki, that she has a boyfriend.
And it’s Tatsumi Matsui, a popular and handsome guy at school.

At first, he was congratulating Sui, his only friend at school, on her relationship.

I’m sure you’ll be able to understand why.

In the midst of this, he learns that Tatsumi is trying to trap Sui-chan and turn her into a bitchy gal.
In order to protect my precious best friend, I headed straight to Tatsumi to ask her to break up with me.

I’m going to be straight to the point. I’m not sure what to say, but I’m going to say it.

“Huh? My best friend was taken from me and I’m all alone, so I want her back.

And the conditions that Tatsumi offered were
In exchange for my best friend, I had to offer my body as a sacrifice.

I was forced to perform a number of perverted acts by Tatsumi, who likes bitchy gals.
I’m being “transformed" into a bitch in appearance.

Eventually, I fell into the depths and even my heart was “changed".

Characters
Kumi Tashiro (CV: Hina Shinomiya)
A shy and unassuming member of the library staff.
She speaks in a whisper.
On the other hand, she has a strong side that stands up to the charlatans to protect her best friend.