The back-to-back-to-back-to-back spate of sageuks in K-ent in 2021 went on a pause after The Red Sleeve Cuff ended, and that was preceded by The King’s Affection, Lovers of the Red Sky, and River Where the Moon Rises. All four had a more youthful bent but now a new darker sageuk is here with KBS premiering Red Single Heart (Bloody Heart) this Monday. The first episode ratings were 6.3% which is an okay start, but as The Red Sleeve Cuff which got 5.7% first episode ratings and ended with 17% shows is that quality will still bring in viewers. Red Single Heart looks really bleak though and it may suit true sageuk aficionados but may lack in more lighthearted cute moments so watch at your election as Lee Joon goes up against veteran Jang Hyuk with Kang Han Na bringing the lady side gravitas.