Guren/Yuu/Shinya, Triangle. AU! Drew the cover- Yuu, who lived a horrible life, and ran home, found by Shinya, who gave a deal, "If you'll be Guren's birthday gift, you'll have a place to live." Yuu, having cat ears and tails due to the experiments tested on him by his uncle, lives with the two males, attending school. Please look up the flower, "Calla Lily."

Shinya and Guren are best friends. Or are they...? After Kureto puts a different idea in Shinya's head, can he continue being just friends with Guren? Does Guren realize something more in their friendship? Who's the only one who can make Guren's heart melt, and who's the only one that can make Shinya lose control? (Gureshin, one-shot, fluffy but borderline smutty at the end)