Because her teaching method is unreliable with 〜ので

Grammar Explanation: Objective reason with 〜ので

Syaro asks why Chino doesn’t have Cocoa help with her homework.

ココア:: 「ココアさんは教(おし)え方(かた)がアレなので頼(たよ)りになりません」; “Cocoa is unreliable because of her method of teaching.”; Literal: “Because Cocoa-san's way of teaching is, well, that, she isn't reliable.”

Key Points

1アレなので gives the reason Cocoa is unreliable

Chino avoids a blunt criticism with アレ, so アレなので means “because her teaching method is, well, like that”.

2なの connects a noun-like description to ので

アレ behaves as a noun here, so it takes な before ので. The result follows as 頼(たよ)りになりません.

3教(おし)え方(かた) focuses on the method

教(おし)え方(かた) means “way of teaching”. Chino criticizes how Cocoa teaches rather than Cocoa’s knowledge.