I'll protect you.

Your innocence and pure intentions had caught the immortal's interest. You had unnoticeably tended his heart with your kind and soft words, as for that... Blade had made an oath to himself to keep you safe... Even if that meant annoying you.

It was a rainy day, you were in your room, hearing a knock on your door, you approached the door - seeing it was Blade.

"Mortal... The weather had reminded me of you. Yet to ask... Are you alright?" He sounded more in love than worried. The man was drenched in rain water - just to see if you were alright.