[Suzuki Kyoutarou] Tabako-san on the window Ch. 1 [Ongoing]

A man's solitary smoking habit by his apartment window is interrupted when a bold young girl climbs in uninvited, and rather than turn him in for corrupting a minor, she licks his cigarette and offers a deal—her silence for something far more intimate. What starts as leverage spirals into a secret ongoing affair; he never learns her real name, just calls her "Tabako" after the cigarette that bound them together, while she remains unnervingly calm and composed even as he learns every part of her body. The chapter closes on a chilling time skip: years later she reappears at his door in a school uniform, but the serene poise that once defined her is gone, leaving him—and the reader—desperate to know what happened in between.