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: Anime News Network)

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A salary man is quite depressed, especially on Mondays. At his lowest point a well-endowed High-School girl calling herself Ai-chan stumbles breast-first into his face. The concussion she gave him served as the start of their relationship.
 
Features additional single-page images of other side-stories, that were posted on the Authors Twitter every Monday before. The first volume illustration compilation book that also includes comic was released on December 31, 2015 at Comic Market 89. The second volume was released at Comic Market 90 and the third volume was released at Comic Market 91, all has been published by Himura himself.

A collaboration work between Yom (author of Ganbare, Douki-chan) and Himura Kiseki (author of Getsuyoubi no Tawawa).

A young salaryman is struggling with his "life" of long hours and little pay. Everyday is a slog. But every Monday morning he runs into Ai. Ai's a cheerful high school student who used to suffer from low self-esteem. Now the two have things to look forward to each week, even if those moments only seem to last for a few stops.
 
(Source: Denpa Books)

The second season of Getsuyoubi no Tawawa.

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