Heh, i might not be a nut like Yumiella but i do kinda enjoy all that 😄
As for the novels yes, there’s 6 volumes published in Japan and ongoing, the J-Novel Club official translation is up to Book 4, with Book 5 to be released at the end of May. Beware because the book covers and descriptions themselves kinda are spoilers (more the descriptions, the covers are more like intense teasers 😜)