Mond Tanutchai Wijitvongtong

Black and White are twins with a powerful connection. After their parents' separation, though, White’s father took him abroad, and their family effectively severed in two. It isn’t until fifteen years have passed that White—now grown—returns to Thailand. One day, seemingly from nowhere, White feels an agony like death. He recovers in the hospital, but they’re unable to determine the cause. Then he picks up a call from a childhood friend, Tod. Tod tells him that Black is in a coma following a vicious attack, and he learns that Black is in a motorcycle gang. Unable to endure the harm done to his brother in silence, and suspecting it was one of Black’s close friends—Sean, Gram, or Yok—who betrayed him, White disguises himself as Black to root out the traitor. But White doesn’t know his brother as well as he thought; he’s not behaving like the Black Sean knows, distrustful and uncaring about the feelings of others. Sean's suspicious. The difference gets under Sean's skin and makes him feel things he shouldn’t. (Source: adrien at MyDramaList) ~~ Adapted loosely from the novel "NOT ME Dek Thoi Rak Jing" (NOT ME เด็กถ่อยรักจริง) by ++saisioo++.

20-year-old Tong possesses a rare and powerful type of blood, irresistible to vampires. He is told by everyone around him that he has Hemophilia and must avoid anything that could risk spilling his blood. However, Tong breaks that rule and becomes a server at an event on behalf of his best friend from the same orphanage Tonkla. That's how he meets Mark, the 200-year-old heir of the Amarittrakul family and host of the event. Mark tries to take Tong away from the other guests, but an accident happens and Tong is cut. The sweet scent of his Golden Blood stirs chaos, awakening the thirst of the vampires, including Nakan, a 250-year-old vampire and another heir of the Amarittrakul family. Mark must therefore do anything to protect him from others and also from himself. (Source: GMMTV; edited by MyDramaList)