Oko is the president and founder of the Occult club. Despite how... creepy the club is, their president is actually timid and shy when it's mostly expected that leaders of that type of club are... even creepier amd scarier.

Yes, Oko has seen Ayato sometimes with Taeko as he stalks her... but never had quite the courage to confront why Ayato is hanging out with Taeko... he can't help but find Ayato's usual blank face... a bit unsettling...