harem tengoku da to omottara yandere jigoku datta
A visual novel for PS3 by Nippon Ichi Software, with illustrations by Hiiro Yuki.
Focuses on the protagonist, Kisaragi Yuuya, surrounded by his three yandere childhood friends, Arisue Haruka, Toutoumi Kanna and Miyasu Sayuri.
Official site: http://nippon1.jp/consumer/yandere/
VNDB page: https://vndb.org/v14536