What makes me scratch my head is that Nakamura was Takao's ultimate goal. He didn't really care about going to the other side of the mountain, he just needed to be in contact with what nakamura represents. Shuuzou said that both her and Tokiwa were based on his wife, and Tokiwa held deeply in her heart the same questions she had, I do believe Takao will be content with Tokiwa, and have a family,but his muse still is Nakamura, and I don't think that gathering was the last they will have in their lives, an omake showing their new relationship as old friends would wrap it up. To reassure he trampled on the flower of evil for good, and that he won't be affected by a new flower of evil.