So here is my guess... That guy is not his brother but the fox that's shape shifted into his brother. His bother is actually dead. (Remember how he said the 3 of them used to be together?) And how would he draw the portrait of himself and his brother? There has to be the third one the fox that drew it....
Orv ♈＞ フ
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／` ミ＿xノ
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/ ヽ ﾉ
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| (￣ヽ＿_ヽ_)__) ᯓᡣ𐭩
＼二つ
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／` ミ＿xノ
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/ ヽ ﾉ
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| (￣ヽ＿_ヽ_)__) ᯓᡣ𐭩
＼二つ