—Don’t use that.

Sienna hated Ignition.

—Hamel. You must be too stupid to know this, but Cores are very delicate organs. People aren’t born with them, they are artificial organs made by mastering mana. Therefore, they are imperfect and come with many risks. 

Several times in his past life, Hamel collapsed from exhaustion after using Ignition. Every time he did that, Sienna would sit beside him and nag all night

—From the start, that technique could only be used by you. Do you understand what it means? You’re an idiot, so you must think that just because no one can use the skill, it means it’s some very special specialty. Well, in my eyes, it’s a disability, not a specialty.

—…Aren’t you being too harsh?

—How is this harsh? I held back. So. Many. Times. Thanks to you, we aren’t in danger anymore, but… you! You idiot! You are in danger now. What on earth are you doing? Look at you, just lying down on the floor and unable to lift a finger. You became a real idiot now.

Whenever he heard these naggings, his fuse would snap and he would refute her. Still, Sienna always came down to the same conclusion, ‘Yeah, you are an idiot.’

—Do you get it, dummy? Never overload the Cores. They are already too close to the heart, so why do you keep overloading them? Ordinary people — no, not just ordinary people! Even I, the Greatest Archwizard of Humanity, would also die or become a vegetable if my Cores were overloaded! 

—I’m able to do stuff that even you can’t do, so isn’t it a specialty?

—…Oh, y...