Recently read the Light Novel (I think? Maybe it was the Web Novel) and holy moly that's a lot of differences. Not just Tina being a dude there, most of the original plot has been ripped apart and spread out into different arcs where originally it was one massive shit-hits-the-fan fest.
Tina trying to get a better connection with slow , she might even get his signature/ picture for promotional purposes.
He can have any food and room he request including her room XD