Nasu Natsuko no Atsui Natsu (2010)

Nasu Natsuko no Atsui Natsu 2010 / ナース夏子の熱い夏 2010 /

Ichiki is a salaried worker who works for the same publishing company as his wife, Kazuo Satomi. One day, Ichiki visits Kazuo, who was injured by being hit with a bicycle and was hospitalized. He then meets and fell in love with Natsuko, a nurse at the hospital. Although Natsuko gives a vague answer to Ichiki's invitation, she eventually plans frequent dates and finally crossed the line. (Source: Translated from movies.yahoo)