That is the BottleneckEpisode 3

Set in a convenience store that seems to be everywhere, through the appearance of a convenience store clerk who does not talk properly, while raising problems with the way of modern communication, we will approach the secret of the mysterious hero Mutou.

• 25Baby StepsUp to EP 25
• 12Shuffle! MemoriesUp to EP 12
• 12Ga-Rei-ZeroUp to EP 12
• 6Humanity Has Declined SpecialsUp to EP 6
• 2Baka & Test: Summon the Beasts OVAUp to EP 2
• 25Bakuman.Up to EP 25
• 1Persona 3 the Movie 3: Falling DownUp to EP 1
• 12HanayamataUp to EP 12
• 1Winter Cup Highlights Episode 3 – Winter Cup Highlights -Crossing the Door-Up to EP 1
• 10Is This a Zombie? of the DeadUp to EP 10
• 13Space☆DandyUp to EP 13
• 1Steins;Gate: Egoistic PoriomaniaUp to EP 1