koisuru_otome_to_shugo_no_tate
Hentai game from AXL-Soft.
Official site here: http://www.axl-soft.jp/products/03/index.html
Characters
Kisaragi Shuuji (Yamada Taeko (koisuru Otome To Shugo No Tate))
Kasugazaki Yukino
Tsubakihara Ren
Shinjou Marina
Sanada Setsuko
Homura Yuuri