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:
- 「ココアさんは教え方
( がアレなので頼( 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.”
- “Cocoa is unreliable because of her method of teaching.”
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