Tomomitsu Tsuchiya (Taisuke Fujigaya) is the captain of his high school basketball team. He is also a senior at his school. Even though he is not that good in basketball, he is selected as bench player for the prefecture qualifying round. The underclassmen on his team, who are all better than him, are not happy about his selection.
Tomomitsu Tsuchiya then meets Sae Hatori (Mizuki Yamamoto). She is also a senior at the same high school. She keeps watching Tomomitsu Tsuchiya shoot three pointers. They become closer and develop a romantic relationship. Suddenly, Sae transfers to another school without saying a word.
Akagi Shigeru is a young, white-haired mahjong genius. One summer in 1965, he ends up facing off against Washizu Iwao, Japan’s King of Darkness who has amassed enormous fortune and power, at the request of his acquaintance, the rogue detective Yasuoka. As the observer, Ogi Takeshi, a leader of the henchmen of Inada-gumi watches over them, mahjong with special rules called Washizu Mahjong begins. It is a life or death struggle with Akagi’s fresh blood and Washizu’s entire fortune at stake.
Sixth grader Ayase Chihaya, a tomboy with no ambitions or goals of her own, gets to know Wataya Arata, a transfer student at Chihaya's elementary school and an outcast. Through Arata, Chihaya picks up karuta and they form a team with their other friend and classmate Mashima Taichi. After graduating elementary school, Chihaya continues to play karuta hoping for a chance to meet Arata again after he went back to Fukui to take care of his sick grandfather. As time passed and Chihaya enters high school, she starts a karuta club with Taichi so that they can finally meet Arata again.