Your genius little sister and the second-oldest of the Onami girls.

Akane wants to come across as both a cute girl and a proper lady in front of her family. She always wants to show her beloved brother her best side, but her powerful aversion to the cold turns her into a bit of a goofball whenever she desperately tries to evade its icy grasp.

When the hugging rules were put into effect, she started warming up by keeping her arms locked with Onii-chan’s in bed.

Your stay-at-home little sister and the second-youngest of the Onami girls.

Although she’s not the oldest in the family, she has made it her mission to master housekeeping, and she is ever attentive and thoughtful when it comes to maintaining the family’s spaces. She’s as straitlaced and serious as they come, always wanting to be the voice of reason among her sisters, but she tends to forget herself and grow flustered at times. Her naive nature is shown in her love for stuffed animals, her inability to sleep without her favorite pillow, and her teensy little problem of wetting the bed.

Kohaku puts enormous effort into being a responsible, strict little sister, but over time the new hugging rules reveal the gaps in her armor.

Your klutzy little sister and the eldest of the Onami girls.

Sora is a motherly figure who can brighten any room with her radiant smile. She’s a bit of an airhead and tends to relax a little too much around her family. Her lack of concern for Onii-chan’s presence ends up flustering him more often than not. As the eldest, she wants to be a welcoming presence who can accept anything and everything her family has to offer.

The new hugging rules reveal her latent feelings for Onii-chan.

Your emotional support little sister and the youngest of the Onami girls.

Sumi is extremely shy and doesn’t go to school or interact with people outside her family. Despite her inability to shed her timid nature, she has no problem talking with her parents and siblings, although she still tends to keep to herself. She has a habit of nibbling on Onii-chan’s fingers at bedtime, causing her brother no small amount of distress.

Though very introverted, she is extremely curious and proactive when it comes to Onii-chan.