last picture. But yeah Thongkham is feeling up Jingna
Could be Sek, could be Jingna. The adoption seems like a sore spot for Mo so I'm not sure how close she and Sek were. Personal opinion without seeing the movie I kinda feel like she was adopted after Sek's parents found out he was gay and she just a replacement/caretaker child
last picture. But yeah Thongkham is feeling up Jingna
With the subtitles on for the trailer. Mo says something about not letting her younger brother leave with Thongkham, so I think Jingna is Mo's little brother and Thongkham is going to go after him to mess with his sister. He could also fall for him depending on how much time passes after Sek's death in the movie. It hasn't aired yet and international fans won't be able to watch it for a while but to me personally it doesn't seem believable for Thongkham to fall for someone else while doing everything in his power to keep what belongs to him and his late partner.
Jeff: Chill series with romance and comedy elements. Barcode: Not chill series, but intense with no romance Let's see if these two who is telling the truth
K-Drama 
Personal opinion without seeing the movie I kinda feel like she was adopted after Sek's parents found out he was gay and she just a replacement/caretaker child
It's going to something unforgettable seeing Thongkham on screen that's for sure
Barcode: Not chill series, but intense with no romance
Let's see if these two who is telling the truth