I think it'd be more enjoyable if the author didn't make MC transform into handsome guy this fast. Thus, it'd give more impact on how he's accepted in a new enviroment, despite he's being fat and short. With the current development, the reader would think "oh yeah, he's not bullied this in new school because he's now handsome, afterall", at least such thought crossed in my mind.
well, it's still a manga that i will subscribe, though.