The visual features the tagline, "I met you in my 17th summer ..." The "boy-meets-girl" story depicts how words and music bridge the gap between Cherry, a boy who is terrible at communicating with other people, and Smile, a girl who hides behind a mask. They meet in a mundane suburban shopping mall in a provincial city. Cherry always wears headphones and puts the feelings he cannot utter into his hobby, Japanese haiku poems. Smile always wears a mask to conceal her large front teeth, for which she has dental braces. As a popular video star, she streams a video about seeking "cuteness." (Source: ANN)

In the year 2045, Internet and artificial intelligence have become widespread in the outer space. Following a massive accident at a space station, a group of children are left behind. Using narrowband and SNS, low intelligence AI, and smartphone-controlled drones, they overcome numerous crises.

Yu-yu is a boy living in Kanazawa, Kaga Province. He is 15 years old and in his third year of junior high school. He has the ability to sense the feelings of others, but he is troubled by the fact that he cannot say no when asked. One day, Yu-yu could no longer stand going along with his sister's hobby, so he ran away from home. The one who saves him is Megumi Okura. Megumi invites Yu-yu to a nighttime amusement park called "Wonder Hill" where her friends hang out. At the amusement park, Yu-yu meets Megumi, Zakusa Ishikame, and Tomari Seto, members of "Team Blackout," a group that meets to play Vanguard every night. Tonight, a serious fight for the team's flag will take place. Blackout's leader, Danji Momoyama, and the mysterious and powerful fighter, Touya Ebata. As Yu-yu stares at them, the card fight is soon eroded into a world of images. This is how Yu-yu encounters Vanguard, a world he has never seen before, and is drawn in by its powerful allure- making new friends along the way. (Source: ANN)

The anime centers around a boy named Kouta Kouka (Kouka Kouta in Japanese name order, an apparent wordplay on Coca-Cola). Kouta strives to be the world's best Bottle King at the Bottle Battles in the virtual Drink World. He comes across his Bottleman partner Colamaru and then wages battles with various rivals. (Source: ANN)