That is the Bottleneck

At the kind of convenience store you could find anywhere, with the same part-time workers you would find anywhere, there is one employee who is... different. But what exactly is going on with the mysterious Mutou?

After moving to Tokyo from the countryside, Oda has found a small bit of comfort in a convenience store with good service and friendly staff. But when he comes in to pick up his daily snack, he might end up getting more than he expected...

The manager of the convenience store is struggling with his anxiety issues. Thankfully, Mutou always seems to be around to offer a helping hand.

Tabata is having long-distance relationship woes that are disrupting her performance at work. Can some kindness from Mutou help her regain her emotional footing?

The only person who seems to realize something is strange about Mutou is his co-worker, Adam. But why only him? And why won't anyone listen?

He's considerate, diligent, and a model convenience store worker... but just who is Mutou? And what exactly is up with his head?

The socially awkward Ueno is barely managing to hold it together at his part-time job. Can some gentle encouragement from the mysterious Mutou help him shape up?

It's been months since "Mutou" has started working in the convenience store, and (almost) no one has figured out his curious secret. But why is he here, and what is he looking for?

Mutou is desperate to get Tsukiko to realize the connection between the two of them, but he finds out that getting her attention is going to be harder than he imagined.

Tsukiko's job will soon have her moving away, which would mean saying goodbye to the convenience store, and Mutou. Can he express his feelings before it's too late?

Akiba and Adam argue over what Mutou should do about his unrequited feelings for Tsukiko, but the strange convenience store worker isn't sure himself.

With Tsukiko's job taking her out of town, will Mutou be able to connect with her before she's gone?