@Aleccz He apparently was in a position to "pay-to-win", as he referred to supplying the protagonist with goodies earlier. So that means either a family with money or he's worked long enough to have a good income.
The Galactic Navy Officer Becomes an Adventurer
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM