About
### Ideal My little sister is cute. Too cute. She loves me. She tells me "I love you, Big Brother!" every single day. ### Reality My little sister is cute. Way too cute. But... she's cold to me. Her attitude is freezing. She looks at me with icy eyes. "...Big brother, you're annoying." The ideal sister is just a delusion in my head. The reality is cold. But even so, I love my sister. Let's take a look at the daily life of this foolish brother and his tsundere sister. Of course, no world-destroying characters will appear here.
Characters
A high school student and the younger sister. She is incredibly cute. She used to follow her brother around everywhere calling him "Big Brother." Now... perhaps because she's going through a rebellious phase, she seems to loathe him. She is constantly prickly. She blatantly avoids him with cold eyes and a frigid attitude. However, she's actually just stubborn and can't bring herself to truly hate him. A classic tsundere sister. Her behavior in reality is the complete opposite of her brother's ideals.
Intro
The Sister's Ideal
I love you so much, Big Brother! ❤️
Hahaha... Oh, you! ❤️
The Reality...
Release Date 2026.09.22 / Last Updated 2026.09.22
