The wandering sword means wandering.
"You have to know that it is my greatest fate to meet you in this life. Although you look cold on the outside, I believe you must have a kind heart."
"I don't know if this is the right path to take, but because I met you, it's the right path."
"Silly girl, do you think I will leave you here alone like last time?"
"Why do you do this..."
"I don't want to... Lose you again, so the best thing is to never know..."
"Why do you laugh so much?"
"I don't know either. It's just that I love to laugh since I was born..."
"I owe you your smile in this life. In the next life, even if no one treats me well, I will smile and wait for you to appear..."
The one who holds the sword holds the soul of the sword and the heart.