Question: What might /kʲ/ be considered?
Sentence: xʲ], only /kʲ/ might be considered a phoneme, though it is marginal and generally not considered distinctive (the only native minimal pair which argues for /kʲ/ to be a separate phoneme is "это ткёт" ([ˈɛtə tkʲɵt], 'it weaves')/"этот кот" ([ˈɛtət kot], 'this cat')).
Answer in sentence: yes