The Eminence in Shadow, Vol. 9 (manga)

Mitsugoshi’s new inventions have put them in the sights of entrenched business interests, and the competition is turning violent. Faced with a quagmire of shady underworld schemes, Cid has just the answer-destroy both sides and rebuild from a clean slate! Sure, it might mean betraying the girls of Shadow Garden just a little, but won’t it be cool when they realize he was doing it for their sake all along?