How much gay content is in this game? Speaking as a gay man, is it just a throw away guy or 4/5 main characters?
you can have gay (masculine on masculine) content with 2 of the 7 main casts. The 'landlord' or whatever role you give him and the blue skinned demon you can see in the images. There really isn't any throwaway character in the game besides maybe a few no name npcs. Besided the main cast there is the second main cast with Sora (who has a lot of content) but he is a catboy femboy so I won't count him towards masculine content, then Lucen a wolf mix demi-human, kahrrt (he only has one scene yet) a male goblin, and noir (gender can be changed to male) with a few scenes. Overall there is a decent amount of content, for every scene available for the MC there are alternative scenes for all 3 transformations (masculine, femboy and female).
mostly yes, you will see some teasing at the start from women and as the MC starts straight at first and has a girlfriend there will be a bit of hugging, and handholding but even kissing is avoidable and everything that goes beyond. The game will remember your choices too so if you don't follow the womens content you won't get it further down the line.