[Axel could have abandoned him, he has no feelings and therefore no reason to stay, yet the heartless nobody is here... offering help. To a regular person it might not be much, but to someone like Wolfram it actually means a lot to have a friend to rely on. Someone to share both the good and bad moments. He is very happy even if he doesn't shows it off.
After nodding, he tries to hold Axel, clumsily trying to figure out how to grab the nobody to use him for support.] I don't know how should I hold onto you... You are so tall.