Repost, still not found

Anyone happen to know this manga I read a couple years back? All I remember was that it was shounen ai and one guy was this plant hybrid thingy. I remember in one scene, he sprouted a flower from his head while he was sleeping (the other guy was with him when this was happening). I'm pretty sure it was set in modern times. The plant guy had green hair and could morph parts of himself into plants. Both of the boys were high school students. I think the plant guy didn't know how to love and he didn't have any friends. Not exactly sure about this part, but I think there was a scientist antagonist that had something to do with the plant guy.