Perfect Propose Episode 3

my heart broke for Kai in this ep, i don't…

my heart broke for Kai in this ep, i don't get the old man going along with his son despicable behavior -poor Kai, i cried for him. that's why was even more annoyed at Hiro's inability to speak up, let alone his constantly belittling himself, saying he is slow so it's logical that, that supervisor keeps dumping additional work the sec he has to get off work. like where is the logic there? & ironically he always only comes to Hiro - cause he knows, he will get all his work done in the minimum of time. the irony & the stupidity is infuriating.