It Begins and Ends with Us

Taekyun meets the sister of his ex-lover whom he lost contact with four years ago. After asking her a few questions the memories resurface making his stone-cold killer heart, ache.

Reminiscing over his past brings up these unfortunate memories not expecting that the one he swore allegiance to knows his ex-lover but what he finds out brings out a wave of terrible anger within him causing him to lose focus on the objectives that they seek. His ex-lover too does not expect to meet his lover who stopped contacting him over the years - but it's not all that bad when they meet again its just that, why is all of this happening?