Kitaouji Daigorou

The main character in episode 188, gives a presentation in class about meeting and befriending Madao (Hasegawa).

Daigorou's father is injured and gets depressed, turning into a Madao himself. After he left, this is the reason he felt compassion for Hasegawa. Hasegawa started living with Daigorou and his mom, with his mom showing signs of affection for Hasegawa.

When Hasegawa finally shapes up and goes to a job interview, he meets Daigorou's father who did the exact same thing. Hasegawa causes a ruckus so that Daigorou's dad gets the job, and returns to his family.

Encountering Hasegawa in the park, who is back to being a Madao, Daigorou bursts into tears yelling he knew what Hasegawa did and calls him the 'nicest, best samurai'.

At the end of the presentation everyone bursts into tears. A credit roll reveals the report was written and directed by his mom.

Wikipedia