Marginal Prince Complete Series

This anime is based on what appears to be a boys-love sim game. The main character, Yuuta, is supposed to be the viewer's younger brother who goes off to study abroad on a small island in the Atlantic that can not be found on any map. The school he enters is called St. Alphonse Gakuin (St. Alphonse Academy). The boys who study here are all "marginal princes" which appears to mean Princes of remote, frontier or border regions.