So, Souji went back to his world, wake up and went on that mission. What happened?

( Canon Update )

Souji has been canon updated back in his world for a few hours...or more. He's in the 'sleeping' transition towards the next day when the Mall brought him back. So...I guess early Day 3?

( Canon Update )

Taken from the end of the mission/Chapter 7, after the boss fight. He promised to explained to Yua where he got his money from and the Velvet Mall after the mission, when he's taken back.

( Canon Update )