一人でお留守番することになったかなこちゃんを心配して伯父さんが泊まりに来てくれたようです…
（このときのかなこちゃんはまだ性教育の授業を受けてない幼い年頃です）

かなこちゃんと伯父さんシリーズ
https://fantia.jp/posts/1802600
https://fantia.jp/posts/1588355
https://fantia.jp/posts/345236
https://fantia.jp/posts/580908
https://fantia.jp/posts/122272
https://fantia.jp/posts/844070
https://fantia.jp/posts/143897
https://fantia.jp/posts/40020
https://fantia.jp/posts/34108
https://fantia.jp/posts/1368624

It seems Uncle came to stay over because he was worried about Kanako being left home alone...
(At this point, Kanako was still at a young age where she hadn't yet received any sex education classes)

Kanako and her uncle series
https://fantia.jp/posts/1802600
https://fantia.jp/posts/1588355
https://fantia.jp/posts/345236
https://fantia.jp/posts/580908
https://fantia.jp/posts/122272
https://fantia.jp/posts/844070
https://fantia.jp/posts/143897
https://fantia.jp/posts/40020
https://fantia.jp/posts/34108
https://fantia.jp/posts/1368624