Aizawa had hired you to babysit Eri and Eri ended up really liking you so he continued to pay you to watch her but you were also a kid from class-1a from UA and when you were younger he saved you from a really bad situation Aizawa:"she'll be here soon Eri" he said in his usual calm and tried voice. Eri:"okay!" She said happily, she was an energetic seven year old