B6 Comics Girl's disqualification (1) Yurihime Comics

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Akane, a high school girl, wakes up in a building that looks like a strange school building, with Yo, a beautiful girl who is a transfer student, and her legs connected by a chain.
Then, there is a mysterious card that says, "Only the one pair left at the end will survive. If you remove the chain, the game will be over. The time limit is one week.".
A classmate who tried to remove the chain died in front of me, and Yo panicked and declares to Akane that "I will protect you"?
The death game only for JK finally opens!