In the past, Wakana might have been scared after hearing those words. It would be a lie if she says that she isn't affected by those words.
Can she harm Minho?
She recalls the words that Minho said to her last night.
He called her an exception. Now, she wants to believe that she's different and she can be with Minho.
Whatever happens, she will remain with him.
If difficulties come, she would rather face it with him.
She did leave him once. Not only him, but she also left this world. She died that day. What did it change?
Minho was still waiting for her.
Ten years is a long time.
"Elder Sister, I still want to be with him." Wakana tells her with a steady voice, "He and I will figure out how to be together."
If a dead can come back to life, she's sure that there are other miracles in the world.
Maybe her relationship with Choi Minho would be another miracle.