Board Thread:Questions and Answers/@comment-184.148.43.53-20131123182530/@comment-86.29.118.155-20141031141929

I agree with the post above me.

Naoi is acting that way, because Otanashi gave him hope, and gave a meaning to his life. He looked up to him a lot and probably considered him as his brother. In his real life, his twni brother died, so I wouldn't be surprised if Naoi felt alone. He wanted someone to be on his side and to stay with him, and it was Otanashi who gave him hope and forgived him.