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office romance. past encounter. one of the main leads plays hard to get and the other chases

both are having Best as one of the main characters, however, CO is less appreciated than KKB!
for CO it's a co-worker's relationship while for KKB! it's about sharing a house with 3 strangers
(in my opinion, KKB!'s story is less messy tho)

both are set in an ad-type agency. the chemistry between the 2 leads is undeniable. the audience can see before the characters though.

The introduction of how they met. Also called Episode 0 ( zero).
It's very cute, and I loved it. Hope many people will like it.

The main leads in these series checked-in the resort to heal their broken heart. Somehow, their rooms are next to each other allowing them to get to know more about the other. They have a romantic encounter there at the resort.

Two strangers meet at a get-away-resort. Fate has them as next door neighbor which allows them to get to know each other and fast becoming friends then turn into lovers.