First of all, I'll like to clear some doubts here, so that it won't confuse you.

mc's name is Ruby Rose.

now I know some of you might say Ruby Rose is a female name, but it's not. Ruby could be both male and female.

And his second name is Ross. It's his mother's name. his real name is Ruby Reynolds, but he replaced it with his dead mother's name, Ross, as a sign of respect.

OK to the system part.

Ruby can level up with XP

shop points could be used for purchasing or summoning minions and other gears, clothes, or anything a human can produce.

Toilet paper is not an exception.