[In health class when they receive their eggs, Kokoro picks hers up, looks it over carefully, sets it down, and starts to polish it with the edge of her scarf.]

Is this meant to teach us that children are a great responsibility, or just to find care for the eggs?

[Regardless, it seems, she's taking the assignment seriously. You can find her around campus, taking the egg to other classes wrapped in her scarf (it's getting too warm to wear that normally anyway), dragging it through the quad courtyard in a wagon, sitting it beside her at the Mythril Cage so it can watch(?) while she throws axes at a target, and asking a bunch of questions at the infirmary.]

The handout for mine says "keep from toxins," though I would think that would be a given for any of them...