Which Thai BL (boys' love) drama series, based on a novel, became a global phenomenon in 2020-2021?

• A Bad Buddy
• B SOTUS
• C Until We Meet Again
• D 2gether: The Series ✓

2gether: The Series (2020) starring Bright Vachirawit and Win Metawin became a worldwide streaming hit, introducing many international viewers to Thai television dramas.