老女的少女ひなたちゃん
A 10-volume slice of life comedy manga series by Kuwayoshi Asa.  The series revolves around [[Tsukimizato Hinata]], a preschooler who tends to act like a granny due to her retaining memories of her past life where she lived to a ripe old age.

h4. External links

* "MangaUpdates":[https://www.mangaupdates.com/series.html?id=115539]
obaa-chan shoujo hinata-chan