Both have the same somber coming-of-age theme and slow paced storytelling. Both the lead tackles lost and hopes to find redemption in life. They also deal with living in what seems is a hopeless place and situation. They both find a way to scope with the help of their on screen partners. The Blue Hour is gravitating towards a creepy-horror-esque genre while 2 Cool 2 Be 4gotten is youth-centric drama.
Again, another 2015 BL with dark themes. Both BL deal with family issues and society looking down on Lgbtq people and both have characters who deal with it through a mixture of intimacy and then violence. Blue hour makes you think more about what was actually happening and is has thriller/horror esque vibes but it not actually scary whereas father and son is meant to be (emphasis on the meant) kinda heartbreaking to empowering tale of gay family learning to care for themselves. Blue hour was also definitely better quality in acting and emotions then Father and son but honestly, weird low production BLs from 2015 for the win