"if something were to enter your body, whether it be poison or something, the necklace will eliminate it".
So by that logic it can also be used as contraceptive?
and with this all the remaining role already been assigned, so the predicition would be:
1. tomo will injure herself
2. jun will replace her as the prince
3. misuzu complicated feeling toward jun and tomo relationship will be the focus on this arc
4. either she will accept her feeling towards...