[surerman]

Originally Posted by zephyr325

Spoiler for The reasong for Miyuki's lack of control over her Magic:

The reason for this is revealed in Arc.03.

Most of Tatsuya's real power is surpressed with a seal placed by Yotsuba.

Miyuki usually shows lack of control for her Magic (Magic spontaneously activating when she is emotionally upset) because half of her total capability to control her Magic is continuously used to surpress Tatsuya's power.

She is capable of releasing the seal (although it is mentioned in the novel that she doesn't have authority to do that).

While the seal is released, Tatsuya can use his true power and Miyuki also regains her capability to control her Magic.

Spoiler:

Then it's bring another question, why Tatsuya didn't completely remove the seal already. His brain can calculate how to do it.
He know Miyuki will comply if he want to (if somehow the ritual involved something even harmful to one of them or both), yet he didn't do it.

When he completely full control of his power, he can still pretend to have the seal placed upon, and at the right time, blown up[ entire Yotsuba for good

lol...is this what human call Tortoise hide in it shell?, capable to come out but prefer not to?