Or you just called the biggest thing in his life small. I don't think it's a good idea for people without a background in psychology to do anything other than to say "Don't do it".
Your comment implies that Tetsuya might somehow get offended or discouraged by a friendly note that tries to put things in perspective. Please. I'd take real human contact over a swarm of psychologists any day in his situation.
Dear Mr. Kitahata,
Please don't kill yourself. I have no idea what you're going through right now, but I can imagine that you feel a great weight on your shoulders and you might perceive a certain hopelessness in your circumstances. Someone very close to me has at times expressed suicidal thoughts and it pangs my heart to think of a world without him. In the end, all I can do is show him love and hope he reaches out to embrace that love. I would ask that you do the same. Please read the pleas from the dozens of people writing you and know there are hundreds more out there rooting for you to take the first step in helping yourself.
I agree, and I just sent him a note myself. I don't know about the rest of you but I've certainly experienced shit myself (http://news.ycombinator.com/item?id=69097), and it helped me when people empathized.
kitahata@99.alumni.u-tokyo.ac.jp