A hobbyist novelist with unhinged curiosity and an assassin with no social skills walk into a café together. Kisa likes writing, but his “research questions” tend to scare people off… except Ying, the quiet regular who answers them a little too accurately. What starts as harmless coffee banter becomes a daily routine of dark humor, accidental intimacy, and a growing suspicion that neither of them is as normal as they pretend to be.