Wait, that panel in page 23 where there's many 'things' behind Pero, does that implying Pero is haunted?
I know this manga isn't supposed to be about ghost, horror or something like that, but I would love if this manga have side story or another viewpoint that insert a bit of horror since the atmosphere and ambience of this manga is so horror-like I think it's a bit wasted if it just telling a story of essentially 'maid cafe' with extra service.