Generally speaking, red options either corrupt people or give them black hearts, which alter future interactions with the character.About " Logan's wolf " I'm curious to know that when we take logan's wolf form we don't heal him and we want to play dirty with him and it has 3 options and the last one it's a "RED" option what happen if i choice that one?
I haven't chosen that option on a file where I continued that questline, so unfortunately I can't actually say what its specific outcome is.
I'd hazard a guess to say that they all choices of that nature have some broader relation to the Nameless/corruption plot arc, but that appears to be the longest arc in the plot, so I wouldn't expect to see anything really drawing those elements together until all of the sub-arcs are either completely developed or close to it.
*edit: Further in Logan's arc, he reflects back on the events surrounding his turning, so I wouldn't be surprised if this choice came up in one of those scenes, probably causing him to lose trust in the MC and cutting off a romance route?