Melting me with You (kaifemshin) Rewrite

When Kaito get the news about the death of his rival and love interest. He felt the light of his life gone completely. He locked himself in his room and keep skipping his meal because he don't have appetite after what happen.

He start to behave like this after he got the last letter from his detective when he attend his funeral. The letter is past is past on him from the little scientists that his detective partner with.

After almost a month, he decide to move on and continue his usual life back but this time he had a new promise to keep.

One day, he meet this mystery girl that look really similar to him but he can't track any memories of where they have meet before. When the girl came to his life, he knew that he find his light again and this time he decide to protect it and keep it close to him so he won't lose this light again.