I Tried Confessing My Love to a Serious Girl - Ch. 13 - I Tried inviting my serious girlfriend to a movie date 6

[flannan]

luxurious? So just another rich kid buying off serious girl because he's actually jealous

In most places around the world, Japan included, movies and restoraunts aren't considered particularly luxurious. Not enough to make you feel rich, at least.
Most likely, male lead's family is of ordinary wealth, while the serious girl's family is poor. Maybe the serious girl is motivated by her family's poverty to study hard.
Either that, or the serious girl's family is religious and make a point of avoiding anything pleasant.

 

[asteconn]

This is too heartwarming.

God I feel so alone...

 

[Elfteiroh]

She said it! She used his name!