That's such a mystery ! The easiest answer would be knowledge so the Kirakira and/or the will to pursue freedom. Could also be Shuji bringing the idea of going to earth, thus leaving the comfortable and peaceful life (for Machu at least) on Side 6. I'm still waiting to see where the show will go tho

Thanks for the curiosity then ! I'm also on IG, my account is _rhelia , but I don't post a lot, and mostly draw characters from my own stories

I just love their dynamic (kinda "boy fed up with his boring everyday life meets mysterious dreamy apocalypse girl" but gender reversed) and really Machu's my fav character and I love the depicting of her immature yet intense emotions ! Can't wait to learn more about the oh so very mysterious Shuji