It's the other party's responsibility,

but before its insurance company investigate and admit its responsibility, they won't rent a car for us. However, I will rent a car tomorrow and ask for reimbursement later. We already paid towing cost today, and will ask for reimbursement as well.

Glad we found a person at dealership. Usually the body shop is closed in the weekend.

Anyway, I am confident we can get it behind us without much financial loss, but just cost us time to deal with all those things. Our car is very safe. The car behind us was very badly damaged. He hit us and he was hit by car behind him as well. Both drivers are 18 years old. Both were scared and murmured, Oh my God, my mom will be mad to me!