Ryumao
Thanks for the chapter! Interesting direction you are taking Rudeus in terms of his character and I can see the inner turmoil he's going through. I do feel it is kind of cold for him to consider Eris as a sister since he clearly had some affection for her pre-millishion but it could be denial. Randolph still being prominent after his death is something I really love, keep it up!
I hope that Rudeus gets to meet Krishika again due to the mission to get Sokasu-Grass for Nanahoshi. During this time, Rudeus should request for a pair of "Absolute Void" eyes from Krishika. This should result in Rudeus having a pair of 7 Demon-Eyes:- (1) Foresight (2) Clairvoyance (3) Identification (4) Magic (5) Absorption (6) Absolute Void (7) X-Ray It could be shown that Identification Eye gives these abilities to the user:- (1) Krishika's Knowledge (2) Eidetic Memory (3) Thought Acceleration (4) Microscopic Vision