How did Ikki in The Saints go bad? How did it get better later?

Because there is a cold teacher on the island where he went to practice, it is said that the Pope did it, old

The teacher makes Ikki cold, but he can't. One day, Ikki and his favorite teacher's daughter.

When I finished, I met the girl's father, so I didn't let them play and let Ikki practice.

During training, because Ikki didn't want to Korosensei, he escaped the teacher's punch, but he was caught.

Accidentally bumped into a girl. That girl is dead. I used to hate it. He killed the teacher.

Affected by this incident, I have a huge shadow in my heart, burning with the flame of hatred and swearing.

To kill saint seiya and others. Later, he was defeated by saint seiya, a saint, and later by saint seiya, a saint.

Kindness has changed back to that gentle brother.