One Monday morning the protagonist has a fateful encounter, ending up injured by a schoolgirl’s large breasts. The girl’s name is Ai and the two end up spending each Monday morning together on the train.
Shot from the perspective of an unnamed salaryman, the show consists of everyday segments of his life from week to week. Sometimes it features the train ride with Ai, sometimes it features his job, and sometimes it features places he goes to try to ease his job-related stress.
More Information:
aniDB
Fansub.co
Wikipedia