Summoned to another world with an interesting cheat
Alexandre Koizumi Dioquino Santiago is your average Joe, or perhaps more accurately; Average Juan.
No, he's not Mexican for god's sake, nor is he Spanish. Juan is also a name of some Philippine residents, and sometimes used to represent the Philippine population as a whole. Like as depicted in a certain story named 'Juan tamad'; no, not the folklores either, it's a story with Juan being- you know what, let's get on with this.
Anyways, he lived in the Philippines, obviously, and third-world countries aren't exactly pleasant (neither are first-world countries), so what he did? Move to another one. After gathering enough money for an overseas trip, he took a job, then bought a house, and then filled said house with firearms.
Because why not? He's a gun nut.
One day, he were to recieve a package containing a certain something, and so he did. What he didn't know was-
He was also going to be summoned to another world in the same day.