Papa no Iukoto wo Kikinasai!: Usagi no Mark

The younger of three sisters, Hina Takanashi is a energetic and good-natured 3 years old. The three sisters had their parents lost in a plane accident and they now live with their 19-year old uncle, which is struggling to keep the family unite and happy... and little Hina brings her happy mood to brighten the darker days.

(Source: MU)