
Theres the novel if anyone wants it, it has side stories as well :)
Novel starts from chapter 53 as of manhwa chapter 28
https://blessedempyrean.wordpress.com/sidekick-prince/

This was just so unsatisfying it seems rushed and i hate how it ended like seriously HIM?! Like bro u had two MUCH better choices u had lovely crown prince that LITERALLY RISKED HIS LIFE FOR U AND GOT U FREE FROM EXECUTION then you had a HOT AMAZING PUPPY KNIGHT THAT DID SOO MUCH FOR U AND SAVED UR LIFE LIKE MILLIONS OF TIMES BUT NOOOO you choose a fucking stalker rapist duke….

My precious babies…see ma-chan you see the beauty in my angels…treat them well
I lwk thought hed be getting in the way of my fluffy but now i see he just takes his job seriously good man good man…

That's coz we have seen Ha-kun grow from an obssessed high schooler (he WAS a high schooler when he met Naoto and Shizuku) into a wonderful and responsible husband and father. We know he works hard both as an employee and at home...
But for outsiders he is just some irresponsible rich brat who had kids way too young and is now taking over a readymade business from his mom without even lifting a finger. Matoba san, like all people, judges Hazuki on a surface level, because that's all they know.
Bro wtf that relationship chart confused the well out of me…so hes lovers with this guy but hes lovers with this girl but then married to this guy too then divorced then hes step siblings with his girl but theyre also engaged…im so confused wtf is going on….