Koyuki is a normal high school kid with a big problem: he can't stop himself from screaming at his crazy friends. He swears to himself each day that he'll stop, and each day he fails.

Koyuki's worried about his future. He wants to be a teacher, but he's not sure he can do it.

The whole class has gone on a field trip to an amusement park! Koyuki wants to go after his love, but his crazy friends are standing in his way.

Koyuki was so mad he walked in front of a truck, and now he's dead! Can he come back to life to scream at his friends more?

A new friend has come, and he's just as nuts as the rest! This one's a samurai who wants Koyuki to punish him!

It's time for the school festival! Can Koyuki stop screaming long enough to win first place for his class?

Miguel's power grows stronger by the day, as Koyuki falls further and further behind on his studies.

It's time for a field trip to the local day care! Will the kids like Hanadori's wacky ways?

New Years is here, and everybody's ready for a whole new year of insanity!

Koyuki is down in the dumps because he isn't getting any taller as he grows older. Can the others cheer him up?

High school is almost over! Will Koyuki be free of everyone, or will they follow him to college?