Jelly Fuu-chan. I mean, on paper a relation between 2 succubus is not great because they can't each other life force and they're forced to take it else where. Unless Konomi is ok with an open relationship.
Kind of saw this coming after the last chapter, but I'd have been perfectly happy just seeing more cute day-to-day of the two adorable succubi's lives. Hopefully this resolves without too much drama.