You Call That Service?, Vol. 7 (light novel) — Kisetsu Morita

Shiren has left the Sacred Blood Empire -- and Ryouta -- to become emperor of the newly founded Holy Sacred Blood Empire! With her sister out of the way, Ouka takes the opportunity to make Ryouta her minion, and he begins a new life without Shiren. Meanwhile, finally reunited with her mother, Shiren is living in the lap of luxury... but is this what she really wants? The boy-meetsvampire- girl romantic comedy draws to a close in this final volume.