Lilium x Triangle

Haruka is not your typical succubus: not only does she lean towards girls rather than guys, but she's also kind of an airhead. Upon executing her master plan to visit the mortal realm to suck as much vital energy out of as many human girls possible, she instead fails to find any victims and ends up collapsing out of exhaustion. The succubus is soon found by the sisters Yuuna and Sana, who take pity on her and allow her to stay at their home. Although Haruka initially plans to simply suck the sisters' vital energies and leave it at that, their generosity awakens new feelings in her, and love begins to bloom.

Lilium x Triangle is a Japanese yuri visual novel with sexual content. Like most visual novels, the gameplay consists of reading text atop illustrated backgrounds and periodically making decisions which may affect the outcome of the story. There are multiple endings that can be achieved depending on the player's decisions. The game features voice acting for all significant characters.