Yes, it is easier to heal another than to heal yourself. Ryouichi always thought he and Kanata were too alike..but never thought they would be alike here too? It was good, sad, and bittersweet. It is psychological. Yes, there is rape, abuse, trauma, love, sadness and friendship. But it's the psychological aspect. The two came together so closely as only they had the understanding of the darkness and heaviness of carrying the burden of being mentally tormented by the past, and hiding because they couldn't heal their minds.
This manga messes with my mind, making me think....I wonder.... did Ryouichi heal his own mind by trying to help Kanata? Isn't more like he went deeper in his nightmares by letting fear overcome him with Kanata, and made the past become permanent scars deciding his future? Did Kanata heal his wounds because of Ryouichi's sacrifices and outward strength? Did Kanata wish he was stronger too and didn't freeze to tell Ryouichi how he felt? Does Ryouichi spend his life with regretting the "what if" or does he also hide from that?
The peace they felt, the two could only speak of everything with each other, so why, Ryouichi, did you isolate yourself deeper? You became strong so others couldn't hurt you, and became weak and let you hurt yourself more.
Yuigon