The pictures, which Naiyanoi posted on her social media recently, were taken at Barça Cafe, situated near the Palau Blaugrana, FC Barcelona's well-known venue in Spain.
The man's face was not clearly visible in the photos, which ignited a flurry of speculation on Kenyan social media.
Bloggers and inquisitive users quickly speculated that the unknown individual might be a romantic partner, just months following her husband's passing.
This speculation spread quickly, with many drawing conclusions without any confirmation from Naiyanoi.
However, she did not let the rumors persist for long. Taking to Instagram, she directly addressed the situation with a clear message:
"Can we please know where to draw the line... This is my brother Kantet Ntutu." Thus, the man in the pictures is her sibling, and not a romantic interest.
Since her husband’s tragic death in a helicopter crash in February, Naiyanoi has been in the public spotlight.
The couple had a highly publicized wedding in August 2018 and share two daughters.
She hails from a notable political lineage; her father is Livingstone Ole Ntutu, and she is related to Narok Governor Patrick Ole Ntutu, former Senator Stephen Ole Ntutu, and Narok South MP Kitilai Ole Ntutu.
After Ng'eno’s death, community leaders urged her to run for the Emurua Dikirr MP seat to continue his legacy, but she opted to support David Keter instead, who contested under the UDA party banner.