It's not as gay as one would expect, and I mean it. Sealed is a great story which is both dark and questions morality.
The story revolves around Akihiko and some orphan children he picked up, now living together as a family. They try to look out for one another and eventually decide to destroy the world for one of them. That's not the entire story, but that's the sum of it.
The power or the magic system of the world is well designed. Especially the role of voice and imagination. Thus, the cost of overuse is an impact on voice and sanity.
Each character plays a crucial role, and their decisions remain important. The overall plot of the god being sealed and trying to break the seal was entertaining.
To understand the story and non-gay elements, it's a must-read.