Help needed with bicycle accident

Help needed with bicycle accident

Hi everyone,

I'm a student at a Japanese language school in Tokyo. Two days ago I had a small bicycle accident, completely my fault as i was looking at google maps and went through a red light. Basically the other person was alsovon a bicycle and she grazed the wheel of my bike and fell off. The police were called they were very calm and me and the womans boyfriend exhanged details. Today he went to the homestay place I'm staying demanding $2000-$3000. No reason for this ammount was given. From the place of the accident all i could se was a minor scratch in front kf the woman's bike and she scratched her hand a bit (no blood). Im being told that if i take this to court I might pay less, but I'm scared as I'm 18 and this is all new to me. I will add that I will be leaving Japan on December 8th at the latest

What should i do?