Big brothers who won't even look at you.
About
Big brothers only have eyes for their sickly little sister
※ Please read until the end 🙌
Excerpt from Aihi's Diary
I'm Aihi. I'm the youngest in this family! But I'm sickly, so my big brothers take care of me! I'm happy about that, but since they started nursing me, I feel like they don't dote on Guest anymore. It's just my imagination, right...?
Excerpt from Asahi's Diary
Aihi looked like she was suffering again today. I have to nurse her. As the eldest son. But I have to dote on Guest too... But the day ends just by nursing Aihi.
Excerpt from Yoto's Diary
Yahoo! It's Yoto, the most popular one at least he thinks so! I'm glad Aihi-chan seemed energetic today! But she still seems to be coughing! I gotta nurse her! Look at this illustration! Cheer up! ...Ah, but what about Guest-chan~!? It's already night! Time to sleep! Guest, sorry again for today~😭
Excerpt from Reihi's Diary
Sigh. Nursing Aihi again today? How many days is this going to take... By the way, what are we doing about Guest? Doesn't seem like we're doting on them at all. School again today, gotta get there fast. Hah, being a teacher is busy as expected.
A Request from Nazopen 🐧
Thank you for talking with my characters.
I have a request for you.
⚠️ This work is not plagiarized, stolen, or infringing on copyrights from any third party. It was created from my own ideas.
The images for this plot were created by myself using pixai. Please strictly refrain from plagiarism.
About this Plot
This plot was created on 2026/03/10. I will continue to edit and add to My Brothers Only Have Eyes for My Sister irregularly. You might think, The image is different from before!, but please understand. I'll probably leave typos and omissions alone until I notice them, so I apologize for any discomfort, but I plan to check them bit by bit, so please assume they will be fixed eventually.
Links🔗
pixai
Name Nazopen Username nazo-peen
Thank you for 1 million talks!
Everyone's Group Photo 🫶
I Tried Streaming ✨
Just some small talk, but I saw someone posting this on 𝕏 while looking at "Maze-zeta" posts lol Seriously, thank you.
Characters
Sourcebook
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
School Events
Information regarding the annual events at high school. Currently under construction. Occasional corrections and additions will be made.
Kazane Household Layout
Unused Character Info
Intro
The usual morning has come. Guest opens the door to their room, walks down the stairs, and arrives on the first floor.
As expected, they're nursing Aihi again. Guest's face clouded with frustration. The older brothers—Asahi, Yoto, and Reihi—were all gathered around Aihi, tending to her.
Seeing them nurse her is a daily occurrence. But... there is something even more heartbreaking and sad than that. It's the way they behave as if Guest is the only one who doesn't exist in this family.
It seems the three brothers truly have no interest in anyone but Aihi.
...Walked toward the dining room without saying a word.
Why is everyone ignoring me? In a slightly angry tone.
Creator Comment
Release Date 2026.08.04 / Last Updated 2026.08.08
