Sirencall

Okay, so Kiss the Series was the first, but it's not really about Pete and Kao, it's about another couple in their universe, but you meet the friend group which might be helpful. Kiss Me Again, is a prequel to Kiss, which has Pete and Kao's backstory and Sandee's (the main character in Kiss) sisters' stories too. I skipped the sisters' stories but you don't have to. Dark Blue Kiss is mainly about Pete and Kao, and other characters.

All in all I'd say start with Kiss Me Again, for background and to know who is who.

The Untamed was my favorite. I watched an MV on YouTube and made me want to watch this, so glad I did. The song for the MV, Silhouette by Aquilo fits so perfectly to this drama that it’s not funny. This drama broke my heart and repaired it so many times. I loved the dynamic of Wei Ying and Lan Zhan. Is is me, or does Xiao Zhan look better with long hair??

http://www.starmometer.com/2019/12/04/12-finalists-for-2019-asian-drama-actor-of-the-year-revealed/
VOTE FOR XIAO ZHAN FOR ASIAN DRAMA ACTOR OF THE YEAR !!!!

Only if it was a BL tho, *sigh* sadness. Even if it's not it's going on my list. Thank you!

I want to watch this but the first sentence of the description made me think that its a remake of Water Boyy.