Detective Conan: Guardian of Sorrow

What is the purpose of human life? Look at their smiles everything is clear All the regrets from the past life God gave me a chance Then I will continue to protect this warm everything Who am I? The man looked at the girl in his arms and murmured softly. I don't know who I am, so just think of me as "your guardian knight" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.