
Third-year middle school student Yu-yu Kondo lives in Kanazawa city of the country of Kaga. Being unable to reject requests, Yu-yu often gets caught up in his sister’s hobbies. When Yu-yu could no longer bear it and ran away from home, he was saved by Megumi Okura. Megumi invites Yu-yu to the Night Amusement Park “Wonder Hill” where her friends gather. The amusement park is where many youths of the Vanguard-centric group “Team Blackout” gather. And this is how Yu-yu encounters Vanguard and was drawn in by the appeal of Vanguard and the world and friends he had never seen before.
. 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.