I struggled with this one. I got to the last panel and I found it really hard. I'm pretty sure Heero was really angry and might have overstepped some normal ethical boundaries with the guy who attacked him. I couldn't deal with him feeling positive about that for a bit... and well... as I worked through it, I realize that Duo wasn't mad in any kind of serious way and it's okay to not be perfect. It's the way humans are.