Hmmm.. Yes. I gotta agree with people who said that Bahamut's thought of suicide is not ZU's reponsibilities. Depression is one's own responsibility, never others (most of them anyway and NEVER a stranger's). Of course, being a close friend or a family member should help the person that they love who is depressed all the time.

Why I would say this, is that I was depressed five months ago, and recovered (WITHOUT any shrink or medication). And I gotta tell you, depression, feels, so, painful. But you know what? If only you would just gather yourself together and say to the world:

"Screw this! I ain't gonna be depressed just for the sake of those morons out there who are happy to see that I feel so bad that I can committ suicide any time!"

Otherwise, no matter if he's back or not, he's just gonna be as depressed as he ever was before. One good way for him is to talk a nature walk through the forest or river, or even rural mountain. It helps, seriously.