Toxic

Ken'ichi and Jun have been best friends since they were little kids. Ken'ichi started to change, he's hanging out with more popular people, he started smoking, he bullies and harasses people. He's become a full on delinquent. Jun on the other hand is still a star student and he tolerates all of Ken'ichi's misbehavior. Jun has a grip on him that no one else does. Lately Jun has been hanging out this other smart kid named Hiroyuki and Ken'ichi doesn't like it at all. Are Ken'ichi and Jun separating due to Ken'ichi's naughtiness.