Kata Chikubi Dashita Ossan no Ato Tsuketara Tenkuu no Ken Mitsuketa
片乳首出したおっさんの後つけたら天空の剣見つけた
A manga adaptation of an online forum thread originally posted by a user with the ID YDmPhSO2 on 2ch. The story begins with the protagonist following a man who is exposing a nipple, eventually leading to the discovery of a celestial sword.