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.
| Title | Time | |
|---|---|---|
| 1 | Tawawa on Monday | 2016-10-10 |
| 2 | A Reliable Yet Clumsy Junior | 2016-10-17 |
| 3 | Tawawa Sports | 2016-10-24 |
| 4 | Angel of Blue Monday | 2016-10-31 |
| 5 | Ai and the Pivotal Check-Up | 2016-11-07 |
| 6 | The Not-so-invulnerable Junior | 2016-11-14 |
| 7 | Ai and Her Summer Memory | 2016-11-21 |
| 8 | Most Effective Sedative | 2016-11-28 |
| 9 | Ai-chan and the Bakery Uniform | 2016-12-05 |
| 10 | Ai-chan and the Marathon Battle | 2016-12-12 |
| 11 | Recalling with Regret How He Completely Missed Seeing Her in | 2016-12-19 |
| 12 | Ai-chan and the Stairs to Adulthood | 2016-12-26 |
