Well, yaoi manga usually has a more serious and emotional tone centered around romance. Gag manga, on the other hand, is light-hearted and aims to provide comical situations and entertainment. Also, the art styles might vary, with yaoi often having more detailed character designs for the romantic aspects and gag manga having simpler and exaggerated styles for comedic effect.
I don't know for sure. Sometimes manga availability can change. You could try doing a search on Mangago or checking related manga forums for the latest info.
Yes, manga can be removed from Mangago. It might happen if the content is unauthorized or if there are legal demands to take it down. Also, the site might decide to clean up its library for various reasons.
Overall, 'A Man of Virtue' on Mangago has gained a decent following. It offers a unique take on virtue and has exciting storylines and art that draw readers in. There are some twists and turns that keep you hooked.