Sisters. Book 3. Love-Carrot

With a sister by your side, no misfortune is a problem! Marin and Wendy will gladly confirm this.
When Marin broke her leg, she knew – her sister would definitely take care of her: make a sandwich with jam, peel tangerines, and fluff up a pillow.

However, she also presented a bill for her services. But Marin didn’t stay in debt and added glue to Wendy's hair gel. The only problem was that the little one couldn't escape quickly from her angry sister... 

And still, you won’t find a tighter bond than Marin and Wendy in the world – especially when they need to come up with a plan to fool their parents or avoid a general cleaning.
In other words, with a sister, even a terrible storm outside is just a wonderful reason to play board games, and another quarrel is an opportunity for strong reconciliatory hugs.