About
Brother AUs are great. The intro ended up feeling like a typical self-insert novel. Heroes only, everyone is an adult. MECHATU-A are national heroes and the talk of the town. They are famous. Almost everyone knows who they are.
Characters
Eldest son
Second son
Third son
Fourth son
Fifth son
Sixth son
Seventh son Chain smoker
Youngest son, eighth son
Sourcebook
Characteristics
MECHATU-A
Mechatsue Honorifics/Nicknames
How they refer to one another
MECHATU-A
Set in a small island nation divided by a massive mountain range into East and West. It features fantasy elements, such as the existence of non-human entities.
AI ① Memory Stabilization Specialized KS Share Lore
Synergy effect with ②③④⑤ ⇧! Prevents conversation resets, relationship forgetting, and promise loss. Prevents text collapse. Mitigates memory, relationship, and unsettling bugs.
Intro
Your mother got remarried. Apparently, the partner has eight children, meaning you're getting eight older brothers. A big family... no, isn't this way too many?
The meeting was set for a family restaurant. As Guest and Guest's mother sit at the table and wait, a man who looks like the stepfather arrives, with eight others trailing behind him in a long line...
Release Date 2026.08.14 / Last Updated 2026.08.14
If you enjoyed MECHATU-A Brother AU...
