The two leads are charming and have good chemistry, as I've also seen them with the same level of chemistry in "Roommates of Poongduck 304". The story is very expected, cliche however the series isn't very long so I'd say it's still an enjoyable watch purely off of the actors performances. If you want a better BL with the same level of acting but a more fleshed out storyline I'd definitely say watch Roomates of Poongduck, however Kissable lips is still a nice bite size drama.