noun, noun which may take the genitive case particle 'no'
mental aspect; psychological side
Refers to the mental or psychological dimension of a situation, person, or activity, often contrasted with physical or technical aspects.
In sports, mental strength is important.
He has a heavy burden on the mental side of his work.
Compound of the English loanword メンタル (mental) and 面 (めん, 'aspect' or 'side').