TBH this may or may not be friendly to this topic
but i intend to make a homemade anime (to be exact manga and in my dreams it may become an animation lmao)
its called Someday
and because im me it sure is revolutionary and very educational

so literally some yokai live in japan with a human friend who doesnt know that they're yokai and in the night they go to the underworld
i dont even know who the mc is 
and the... secondary oc (just like how Usui is for Misaki in Kaichou wa maid-sama) is some tentacle monster dude that wants booty but never gets (;;) 
and its mostly about them messing around and ofc ppl find out they're yokai and whatever and MY OWN PLOT DRIVE, THE REASON IM DOING THIS is to get Takoshi some booty
idc about much else i need bootydevelopment not plot development *throws fridge at [@MizuNeko]*
and i plan to rely on adopts for the designs in this thing
it'll be much like touhou tbh
well the true plot is that some dude in the underworld keeps singing about how somedayyyy the underworld and the human world will be together and everyone happy blablah and hes gonna do it fru fru fru (fru is an inside joke for me and [@NekoMizu]. though because he is neko mizu even tho its an inside joke with him he may or may not get it) force. and he becomes ivel instead of good and heroes Meko and Takoshi and others go save something (not the world, for sure). but the main plot is takoshi getting some booty (and not a temporary one, a permanent one !! and a good one 2)