So this story starts out with a cliche premise (I don't mind cliches) and interesting mysteries that don't go anywhere and never get answered.

Isshin becomes Haruru butler. He has a mysterious past and seems to have possibly nefarious purposes. 2 men appear that seem to know him and are slightly intimidated by him.

This all caught my attention and kept me reading, wondering who he was and what was his purpose and why did he choose to become Haruru's butler.

NONE OF THIS IS EVER ANSWERED! Ever!

Also each volume consisted of new guy showing up, creating a slight bit of drama and then never being seen of heard from ever again. Other than a weak romance plot there is no overarching plot that ties the story together.