Marked Wrists

Soulmate AU where the first time you touch your wrist to the heart of your soulmate their heartbeat is etched onto your wrist and beats in sync to their heart. Jimin and Taehyung have been in love for years and are 100 percent confident about being soulmates until Jimin's wrist remains bare whilst Taehyung has Jimin's heartbeat on his as expected. What could have possibly gone wrong in their love?

(Will include all the 7 members eventually and all the ships at some point or another because I'm an ot7 trash).