Kirito and Asuna got married and moved in 22th floor. Based in the manga Kirito erased his dual blade skills and replaced it with fishing skills in order catch a fish. But during their fight against the last boss which was chapter 22, he still have his dual blade skills. Maybe the light novel script had made a little mistake when they said Kirito erased his Dual Blade Skill in chapter 11.
Destiny Archangel 
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