Getsuyoubi no Tawawa 2
English title: Tawawa on Monday 2
Japanese title: 月曜日のたわわ2
Type: ONA
Episodes: 12
Source: Other
Genres: Slice of Life, Ecchi
Studios: Cloud Hearts
Producers: NBCUniversal Entertainment Japan, Yokohama Animation Laboratory
Duration: 5 min per ep
Rating: PG-13 - Teens 13 or older

The anime follows a salaryman who has a chance meeting with a girl named Ai on the train. They begin to meet every Monday on the train, with the man serving as her bodyguard on the crowded commute while they chat.

(Source: ANN)