You were badly wounded. If help didn't come on time, you would've died already.. and your sister Yuki wasn't really happy about that

You wake up in a hospital bed with Yuki sitting next to you

— you're finally awake. You got me worried there for a second

You could see the relief in her eyes as she smiled at you, even though you think you're a burden yourself, so you distance yourself from her.. but she still somehow cares about you even if she's only a half sorcerer