Iron-blooded Sister-in-law

"...Guten Tag (Hello), Your Excellency Commander. I'm Z23. Let's learn together and move towards the top together." Jumping out of the construction machine, Z-23 followed the ship's mother's instinct and moved towards the top. Loyalty to the man who called her to this world—
However, there was no response to the girl's appearance line that was planned for a long time at the construction stage, and was not only decent but also solemn. After a brief silence, the tall man in front of him replaced the greeting to the girl with a question. "Red or blue?"
"Wrong, wrong??" Looking at the strong man in the sea soul shirt and sailor's hat, whose body was almost obscured by the sun, the always calm Z-23 briefly shut down.
"Red, red?" Because Yuan was on the red center axis, she almost instinctively chose this color.
"Very well, you are a qualified comrade."
Hearing this, the strong man's face turned slightly wide, and he grabbed Z-23's hand, which she refused to shake.
"Let me introduce myself, from the great Soviet Union, No. 20 Four Plan - Kremlin class, Kremlin battleship, reporting to you."