Ah, ok. I'm polygamic and don't really understand jealousy, that might've been the reason for my misconception. I knew that Samuel is next, just, please, don't forget Haruki in the future. :-)
Jealousy is a big theme for this project, not from a strictly romantic standpoint per se, but from a possessive reasoning. Subs are not unlike objects in that place and the doms compete for resources. Think of pouty children being upset that another kid stole their favorite toy. Kinda like that.
Rest assured that Haruki won't be forgotten