Angel's Feather

Angel's Feather (エンジェルズフェザー, Enjeruzu Fezā) is a Japanese boys' love visual novel game created by BlueImpact, which was originally released on April 25, 2003 for PC, and later ported to the PlayStation 2 by HuneX as Angel's Feather: Kuro no Zanei. In 2006, it was adapted into an OVA, which was animated by Studio Venet.

Plot
In the Binfield Kingdom Chronicle, it is said that there was once a small, peaceful country called the Kingdom of Winfield, whose king and royal family possessed great white wings.

Hamura Shou is newly enrolled at Yuusei Academy. After hearing about a student named Misonou Kai from the headmaster, Shou comes to believe that Kai is his younger twin brother, who he was separated from when he was younger. However, after a mysterious earthquake, Shou is suddenly carried into another world with two other students. It is in this new world that, after being attacked by a monster, Shou suddenly unleashes great, white wings.