Amano Moe

She is the main character's younger sister who lives with him in a rather large house.
She used to not be an excellent cook, but she joined the cooking club so that the main character could eat delicious meals.
Thanks to this, her cooking skills have improved considerably.
She has a huge brother complex and is also a spoiled child.
Perhaps this is because he has been living alone with him since their parents passed away.
Recently, he seems to have started distancing himself from the protagonist, albeit gradually...