[Light novel] I am the second girlfriend. (7 books in total)

Publisher: KADOKAWA/ASCII Media Works
Author: Yo Saijo, RE Mt.
Size: 105mm x 148mm
Number of books: 7
Language: Japanese
Category: Light novel
Latest publication date: 2024-03-08

Synopsis:
We are dating with each other -where is the dangerous triangular relationship?

"I also like Kirishima -kun second."

I and Hayasaka are dating each other in the second place, even though they have the most favorite people.
Still, I and Hayasaka are certainly lovers. Go home together, meet secretly, and do something that people can't say.
But the second is still the second, so if you get the most favorite person, this relationship will be resolved. I had such a promise.
It was supposed to be---

"I'm sorry. I'm stupid, so I like it more and more."

Even though we approached each other's favorite people, we still stuck in depth
I couldn't stop, so I couldn't let go of each other ...
What is the end of 100%dangerous, impure, unhealthy, and a twisted love that can't be recovered anymore.