Binbou Shimai Monogatari, Chocotto Sister Recommendations
-Both share the same atmosphere.
-Both anime focus on the non romantic relationship between siblings (In Chocotto Sister the little sister is not related by blood to her older brother though) and how characters care for each other. In both anime some of the problmes the characters face are some misunderstandings and sometimes lack of mutual trust.
-Both have cute and heartwarming moments.
-Both have super cute little sisters.
Just keep in mind that Chocotto sister has more fanservice (nothing like To love ru or any other ecchi anime) and may not be as suitable for children as Binbou Shimai.