Marlina observed everything from a higher vantage point.
To oversee the entire operation, she found a location that allowed her to view almost all the key positions in her plan. This spot was once the luxurious villa of one of the lower district's three bosses, the Butcher. It was situated at the uppermost part of the lower district, just a step away from the upper, with ample sunlight.
After Miss Fenrir, the Wicked Wolf, swept through the lower district, this place naturally became her property. Our Miss Fenrir whimsically planned to demolish it and transform it into a… well, a sunbathing plaza for the residents of the lower district.
However, before she could realize this idea, Marlina had already taken over most of the lower district's affairs. As Marlina's control deepened, Seraphina, appreciating the excellent results of an external brain, stopped concerning herself with those matters.