After Being Reincarnated as a Traveler, He Became Stronger by Eating Emergency Food

After traveling through Teyvat, the legend of the Treasure Box Killer spread throughout the continent. In the early days, I was stupid and looked like a useless college student. I don't know if there is any CP, but no matter who I fall in love with, I always love him. Third person Purpose: Live happily no matter where you are