Muscle = Mass
You're telling me you wanna gain body fat? Lol.
^^^ Everything you just told him, he won't gain a single pound. If anything, he'll become more lean.
Exactly.
You want to gain weight, but don't need help gaining muscle? That makes no fucking sense.
Unless you just want to get fat, then just eat lots of fast food, drink NO water, nothing but soda, and have a big meal before bed.