Iron Mask

Jae Woo, who was selected in the survival process to enter the final entry of the national kendo team, meets Tae Su there, who killed his older brother when he was young. He faces Tae Su as a competitor but Tae Su is invincible. Seeing Tae Su in peace and not being able to outdo him constantly suffocates Jae Woo. He becomes agitated as the training comes to an end and his feeling in his deepest mind starts to burst out.
(Source: Letterboxd)