"One day, Mikito collapses from overwork at his exploitative company. When he awakens, he finds himself unexpectedly close to Yanagawa, an elite coworker he barely knew before. He discovers a parallel world where Doms, who thrive on domination, and Subs, who find comfort in being dominated, exist?"
Black-shain no Tensei-saki wa Dom/Sub Universe no Sekai deshita