Ex-girlfriend and current girlfriend are trying to win my love.

High school sophomore Shiraishi Kohei has two girlfriends.
One is Aomi Reina, cool and beautiful. The other is Kurebayashi Yuka, energetic and cute.
He loves and cherishes them both deeply, and it's definitely not cheating—this is a officially sanctioned two-timing relationship! ...At least, for now.

"Kohei-kun originally liked me from the start. My advantage is unshakable."
"Sorry, but no! I overwrote that in a whole year!"

Both girls love Kohei. And Kohei finds both of them irresistibly charming. That means whoever makes Kohei fall for them harder is the true girlfriend. In other words, it's a fierce clash of pride between Reina and Yuka!

During class, after school, on holidays... Who will emerge victorious in this (?) fierce heroine race!?

A chaotic romantic battle of wits begins now!!

Source: Sneaker Bunko