*Revives another thread* The necromancer strikes again! Sorry but... it's a Tohma thread... I HAVE to...He's my favourite character in Gravitation after all.

*Points to picture* See, I love him so much I cosplayed him!
Personally I think Tohma is a little misunderstood... I mean okay we all know he is in love with Yuki, he never says it, but it is a given. Often Gravitation fans speculate that's the reason he married Mika, just to get closer to Eiri. In some ways I can see this as true, however I don't think he should really be wronged for it because as the series progresses we can see that he really does just see Yuki as a younger brother to protect. After all at the end of the anime it's pretty obvious Mika's pregnant. Yuki tells her to "Wear more" during her "special" time.
As for how Tohma treats Shuichi... IT IS JUSTIFIED! Tohma knows music and he knows what people like... he also knows how to run a business. When Shuichi first started he really wasn't ready for the responsibility that was being placed in front of him so Tohma had to get a little rough. He saw potential in the boy, but he had to bring it out lest Shuichi be a liability on the record label.
As for the situation with telling Shuichi to stay away from Yuki, that was also justified and Shuichi SAW that afterwards. The writer was under a lot of stress and had health problems as it was. As much as Shuichi's exuberant nature brought out the good in Yuki it also put a lot of stress on him. Tohma saw this and said "enough" he wanted to protect his brother from being all the more hurt.
Now when it comes to pushing the lead singer of Ask into oncoming traffic... okay, I'll concede and admit that's a little over the top and even a little crazy... but I like the sudden snap moments he has... It just adds this great dark edge to him. Very sexy in my opinion.