For 10 points, give this shared title of the last novel of Hayashi Fumiko and the first novel of Futabatei Shimei.
One work with this title ends with a man thinking he is one of the title objects after drunken sex, following his lover's death by tuberculosis; that man writes reminiscing journal articles to retain a  lawyer for Mukai Seikichi, who strangles Seiko for leaving him. A novel with this title ends ambiguously with the protagonist returning to his room to await a chance to talk to his cousin. The two protagonists in a novel with this title often recall Kano hitting one with a sword after learning of their affair; one of those lovers works briefly for Iba and the Great Sunshine Religion, before stealing Â¥600,000. One novel with this title relates the tragic affair of Yukiko and Tomioka in Vietnam and post-war Japan; another tells of the superfluous Bunzo, who, after losing his job, sees his hoped for marriage to Osei end, due to opposition from his aunt Omasa and interference by the self-seeking Noboru. For 10 points, give this shared title of the last novel of Hayashi Fumiko and the first novel of Futabatei Shimei. 
One work with this title ends with a man thinking he is one of the title objects after drunken sex, following his lover's death by tuberculosis; that man writes reminiscing journal articles to retain a  lawyer for Mukai Seikichi, who strangles Seiko for leaving him.
Floating Clouds [or Floating Cloud or Ukigumo] 