Toumei ni Kuchizuke

While Souta was alone, masturbating in his apartment, he realises someone is watching him: the ghost of a salaryman, named Nishino Kazuma. Nishino has recently died and found out that only Souta can see him. Through this strange situation, Souta agrees that Nashino can live with him until he ascends into another life. A relationship forms as Souta is cured of his "trauma" and Nashino finally finds out how he died.