[Crossover] The Twins' Chaotic Neutral Daily Life

What do twins do in their daily lives?

Kawakami Kakua will tell you: she spends every day trying to “kill” her younger brother, and coming up with countless plans that fail.

Bat: I've adopted two more kids. Let me introduce you.

Bat: (looking at the older one) This is the older brother, Kawakami Kakua. You can also call him Victor.

Bat: (looking at the younger one) This is the younger sister, Kawakami Jishu. Her English name is Catherine.

Bat: (nodding) That's right.

P.S.

1. Two protagonists. At first, the sister and brother are seriously trying to kill each other.

2. A girl disguises herself as a boy, and a boy disguises himself as a girl. Their golden finger is a dress-up System, with clothes that have attributes and skills (nothing too outrageous).

Theme: Children are the world's treasures.