Izuku was born to inko and toshinori yagi
They neglected him his sister and her friends beat him to death every day for 5 years until he left..........
(Not my picture got off google) Izuku after leaving the yagi's.
Breath of yin and yang His nichirin
His girlfriend
This happened during his training in the mountains He finds her sleeping in a box she wakes up and she and izuku become best friends and eventually........well you know.