This is a possible concise summary:
The speaker recounts his experience of being bullied by two former friends, Alpha and Beta, in primary school and how he was saved by his neighbor Deku, who became his role model. He describes how he struggled to fit in and make friends in high school, until he realized that he had to be more confident and assertive. He also explains how he became friends with Beta again, but never forgave Alpha. He thanks Deku for changing his life and advises his audience not to waste time on toxic people. He ends by saying that he still remembers a painful moment when no one waved back to him at his graduation.
Here are some key facts extracted from the text:
1. The text is part 2 of a bullying series by the author.
2. The author was bullied by two friends, alpha and beta, from third to sixth grade.
3. The author was saved by his neighbor Deku, who became his friend and role model.
4. The author was school captain and won several awards and a scholarship for high school.
5. The author felt invisible and lonely in high school until he joined an enrichment class with Deku and other students.
6. The author learned to be confident, friendly and protective of his friends, and to avoid toxic people.
7. The author never thanked Deku properly for his influence on his life.
8. Beta became a better person and a friend of the author, while alpha remained distant.
9. The author plans to make more school videos in the future.