Takatsuki Misora is a 15 year old high school freshman with one glaring
problem: her height. She is extremely short and is often mistaken for an
elementary student and her friends jokingly tease her for being so
cute. Her self consciousness is further complicated because her younger
sister, Kotori who is only 11 years old looks like she should be in high
school or even older. Kotori loves her big sister and wants to play
with her but Misora, as the older sister, is embarrassed with what looks
like a reversal of roles in a sibling relationship.