Only watched episode 4 for PeteKao. Maybe I'll finish the other episodes if I watch their respective series.

First of all, I really love how much more assured Kao is, both in the way he carries himself and the way he shows affection towards Pete. In most of Dark Blue Kiss, he's very shy even when alone with Pete (save the end). Now Kao shows affection in public in ways even Pete finds embarrassing. Or maybe Pete's just sulky. Anyway, it's really cute. Second, while Kao deceiving Pete to spend the day with him is funny and rather cute, it's not believable since Pete obviously had the day reserved for Kao anyway. Pete guessed the truth mid-way as well. Also, Kao promised Pete not to lie way back in DBK; he should've learnt his lesson. Third, the beat-up-then-patch-up trope is SO overdone in every BL drama. It's overdone in the KISS prequels, sequels and spin-offs already. Please give it a rest.