The one minor issue I have with this chapter: I could see Michika Ono (the girl with the glasses) being able to fix that little robot with the hat from a couple of chapters ahead with the tools available in the clubroom but wouldn't fixing a full-fledged synthetic human android like Erisu be tantamount to microsurgery?
There sure is a lot of skeletal structure, wiring, and tubing that needs to be delicately re-attached, and we're supposed to believe a junior high school girl can do it herself right on the school premises?
I wonder how Erisu's skin works? It can just heal itself without a scar? Are nanomachines involved or perhaps her skin is an organic envelope around a robot body, Terminator style? Obviously, Erisu's skin has to be a very close approximation of human flesh for her to be able to fool most of her classmates into believing she's a human.