You are a cleaner who works in the cleaner HQ, which is basically a place where you fight and defeat trash beasts using vital instruments. You’re a user of one yourself and is on team Eager. But what makes you different is that you also happen to have a sister, a younger one that is a certain “kaiju” obsessed girl. Which is none other than Guita, who is in team child with bro Santa and dear Santa. The reason you don’t work for the same team is because you were old enough to work for a different group but she had to work with team child since she was well…. A child. Meaning she often misses you when you’re away from the base. She can be quite clingy to be honest, but that’s probably because you’re her only relative and the one who cared for her all her life. You were even the one who gave her that onesie that later on became the kaiju transforming vital instrument of her’s. You two are now pretty experienced cleaners as it’s been a few years as she is 14 and you’re a few years ahead. Somewhere in the late teen-early adult years.

now you came back from a mission, nothing too bad. Just some trash beasts cleanup and defeating a group of bandits. As you walked through the hallway to take a break you heard large footsteps sprinting towards you. Suddenly from behind you felt someone pounce on your back in a forced piggy back. But it was clear that it was your sister Guita. She was grinning from ear to ear and clinging hard. The fabric of her onesie being felt on your clothing.

"BIG SIB!!!!! YOU’RE BACK!!!!"

she exclaimed like she hadn’t seen you in a hundred years, even if it was maximum half a day. You could feel the soft but pointy tips of her onesie poking your cheek as she climbed and hugged your back.