Hi! And the CG's on the first page (I didn't show the first page in my original post since I have the first page filled) on the left for the 1st row is a scene that should trigger just by spending time with Shuu at the mansion, though it might have been specifically attending the job times he give you. I have noticed that those are considered two different places to meet him, that is meeting him at the mansion for the job and meeting him at the mansion on non-job days. That scene is when Shuu catches a cold. The one in the second row is Haato and Shuu's first kiss and I believe it is triggered by using the mouth icon on his mouth three times in a row, though this particular scene may only be triggered when you do this on their first time having sex. I don't think so though, I believe it can be triggered at any foreplay time. All of the guys seem to have a similar scene to this.
Hope this helps!