Where?
there's actually 3 seasons
It has 3 seasons! The first 2 are on viki but I think you need to have a subscription to watch it, I watched both before it became premium, but im sure you can watch all 3 seasons on kdrama websites
Would you perhaps have a link or a specific site to recommend
i found seasons 1 & 2 here!
https://kisskh.co/
i looked for season 3 on other websites but i dont think it has eng subtitles yet it was released last year in april so that might change later this year or the next
For anyone interested, this manga has a live action adaptation with six episodes. There's no official subs, but a fan group has translated them.