[omimon]

Originally Posted by chrisbad726

SO, after seeing everything that's happening, do his sister fall for him more than a brother and join his harem or am I off track?

Spoiler:

Yes and no. They already have in a sense. They have boyfriends but at the same time it's implied that they chose them because they remind them of Koyomi. It could just be a part of the joke but all three of them say repeatly that if they weren't siblings they would have fallen for each other.

Koyomi have been doing some weird stuff with Karen ever since the toothbrush so take it for what it is.