Very interesting next chapter, because of her sudden swap with megumi, marie cant handle gun with her tiny hand and shoot her own body. They survive of course and get back to the apartment. At first she can handle being megumi well and happy living as a middle schooler, but since her mom notice she able to keep reaching score 100, she gets extra lesson and wanted to get back to her own body.
Meanwhile, J living a live in marie body while recuperating from gunwounds, he ends up getting fat in marie body. Marie now demands J to switch back because she can't handle megumi's mom. After a fight with marie, J accidentaly accept missions from marie boss, which is to kill himself, he ends up killing all the marie boss and gang using marie body, the chapter ends here