Curate, connect, and discover
Can we agree that there are a lot of characters that owe mahiru alot
Kuro ( definitely he changed him 180 to the best)
Inner kuro ( finally understood him and made kuro accept him )
Sakuya ( was to scared mahiru will ditch him or view him as enemy but he didn't and accepted him )
Tsurugi and touma ( touma would rather die slowly than admit it )
Lila ( he saved him and released him from harm )
Misono ( I think misono is just glad he had a friend)
I had a theory about mahiru. so we know the count had 9 bars each one have a demon that he created with them the 8 servamps and there was an official art of mahiru having the same bar as the count but it was broken, what if mahiru is the demon in the 9th bar I mean tsubaki gathered for the count's reincarnation a vessel and a jinn but there's no demon what if that's why they need mahiru because he's the demon of the 9th bar