Vonvi vonvoo--- The extremely muffled "Zombie Hunter" from the title screen of the game of the same name

Kajita's a hitman right now, so I'm not gonna be a zombie hunter!

Get ahold of yourself!!

Ahh, geez, it's piercing! It's piercing Kajita's ears!

Year 2, class 1! Kajita-sensei!!

You're all cute today, like always~!

Kajita-kun!! I made a new character, so put her in!!

You fool, Buku-chan! They'll realize that this is Koi〇tu! Probably (NSFW link) Koikatu (Koikatsu), a "3D character creation naughty love simulation" game