Similar to わたし、二番目の彼女でいいから。

Toradora!

And You Thought There Is Never a Girl Online?

Golden Time (novel series)

Shine Post

Arasa ga VTuber ni Natta Hanashi

Last Samurai Standing

Multi-Mind Mayhem

A Journey Through Another World

Infinite Stratos

My Girlfriend Cheated on Me, and Now My Flirty Underclassman Won't Leave Me Alone!

IS – Otoko Demo Onna Demo Nai Sei

I"s

Iris Zero

Ai Ore!

Aozora Yell

Blue Exorcist

Blue Orchestra

I Want to Hold Aono-kun so Badly I Could Die

Ao Haru Ride