At this late hour the Seireitei's library was usually closed up tighter than the King's Realm. Mitani used a combination of demonic face making and vice captain badge flashing to keep it open so he could pursue interests that didn't involve stabbing hollows in the face, though he enjoyed that pastime too. Immensely. Tonight though he indulged his reading addiction. He wondered sometimes what people would think if they knew the so called demon seed of that crazy bastard father of his was both a blood crazed warrior and a learned scholar of many schools of thought. The dark haired shinigami produced his reading glasses and allowed himself a chuckle at this thought. He'd probably cut the snarker's head off, with a smile. Maybe.
No, maybe not kill the poor bastard but make their life very uncomfortable for a month or three. Experience had taught him to save his more violent urges for the enemy and not those who were called his allies. Though the thought of stabbing one of those eighth division asshats passed through his mind often enough that only the ingrained doctrine of needing to share information with them as part of the role of the 9th so vigorously beaten into his being by his father served as a enough of a restraint to keep him from sating this urge.
Though the library was expansive, and gloomy at this time of night, Mitani easily found the mythology section via the little spark of reishi he was using as a light. He didn't trust himself to hold a candle or lantern and didn't want to be caught up in a fiasco such as 'Great Shinigami Library Inferno caused by insane fucker' so a small globe of reishi was all he needed. With the light of that globe he was able to find his reading materials for the next two hours. Thick tomes that held a collection of myths involving the primordial goddess of night and her children as well as some books on the Hindu goddesses Shiva and Kali.
He felt a reading binge coming on so his violet eyes scanned for the book he had been looking for... and found the space missing its occupant again.
"Just who the hell keeps checking out the book on creation myths!? Fuck that's the fucking third time that fucking book was fucking checked out!" he raged at the empty air before he calmed himself by mentally decapitating a hollow. Feeling better he found a niche to crash in that was well lit by both candle and moonlight and began his task, if you could call it that, of reading.