Ending of the Manga

MoonSong87 said:
Her lingering regret was leaving Teiichi and moving on to heaven alone. Tei felt that she was still in the school, formless now because of her being slowly forgotten. He wanted to bring her back by causing people to remember her, this time in a positive light.

Yuuko comes back, at the gates. She is now no longer bounded by the school. The old school building where her body was had been demolished. She already released her grudge towards those that put her there and forgave them. She is now bounded to Teiichi, her last regret from moving on. We see her at his house and walking around outside school during the epilogue.

In the epilogues end, they reconfirm their acceptance and love for each other.She says lets go to heaven together [apparently the translation was off] . She meant that they'll be with each other and move on to heaven when Teiichi passes on from life. She wouldn't be alone and he is happy to continue being with her till death and then on towards the afterlife.

Well thats what i gathered at least haha. The epilogue was like a subtle explanation of the ending. We see her now being able to walk around outside school. Wanting to live with him in his room. The confession and resolve to remain together forever etc.