Sister Princess

Karen and the eleven other sisters are is excited to meet their beloved big brother again! They bustle about town to get ready for his arrival, and mishaps befall them as they do, but Big Brother's understanding knows no bounds.

Kaho prepares a special gift for Big Brother, but it goes missing! Luckily her sister, girl detective Yotsuba, is determined to solve the case. Afterwards, Mamoru remembers how she struggled with her tomboyish nature until Big Brother helped.

Kaho weighs herself, and the results are devastating! She goes on a diet, but it's hard for her as Big Bro and her sisters enjoy sweets together. Afterwards, Aria finds herself in a mysterious, magical mansion...

Kaho's staying over at Big Brother's place, and she buys cute new pajamas with her sisters' help. They have a fun-filled evening together. Afterwards, Hinako goes out in the rain and faces her fiercest enemy yet: a frog!

A strange girl who looks like Chikage gives Big Brother a ticket to the planetarium... then, later, demands it back! It's not easy, but Big Brother solves the mystery. Afterwards, Kaho remembers the pretty red shoes she got long ago.

Big Brother and the sisters go on a camping trip. Mamoru had a gift for Big Brother, but will she get the chance to give it to him? Afterwards, Rin Rin remembers how her grandpa taught her to love inventing things.