Well, I will say honestly because this is not good in term of character at all while the story itself was good/great.
The character itself was too generic or even worse because their attitude itself are like brat however his dad is truly kind to mc because he know his son want to enter martial arts but his son dont have money at all so his dad save all his hard-work earning just for him.
He dont care if he is fail/pass the exam as long as his son did his best on taking exam is already enough for him. Nowaday its very rare to see kind of dad who support his child even though his family is poor or lower background (sorry for that word) because nowadays kids are too spoiled and get tantrum if their demand is never fulfilled.