Intimidate looking, always end up fighting with people, Masa and his friends often got mistaken by people, including his teachers that they are in a gang. Masa hates this label and he never wanted be called a thug. To try to improves his image, he tries to do social service works, cleaning up street, helping people and be a law abiding citizen as much as he can. Too bad for him, sometimes when he tries to be righteous, his path cross with other and they ended up fighting, which just strengthened his image as a thug even more.
The story started when one day,with some unfortunate event at the green tea ice cream shop, Masa fell on love with a shop owner, Hasune and after knowing each other for a while, he kiss and confess his love to her. Hasune rejected him and ran way, saying that "he will be in trouble for this." Masa is depressed but soon he saw her being kidnapped. His friend tell him to stay away because that car is belong to a company which is owned by a yakuza. Knowing this, Masa decided to go to that company to help the woman he loves. How the outcome turn out? And how about Masa's relationship with that girl?