As someone who has read the novel the lines between what happened in the novel and what happened in the manga were blurred for me so i was confused as heck when i read that tia's dad's store wasn't open yet and she wasn't with her yandere prince 'friend'.
https://novelhd.com/truyen/265380799/
Got from the comments above this one ^^
Wait.... wedding rings go on the left hand right... My guy thinks he's slick.
The right hand is for the engagement my man really choosed a ring for a gift aye