Can I Tag You [ABO]

This article has cut off inspiration, so be careful when entering the pit qwq Copywriting: On the 1500th anniversary of the Imperial United Military Academy in 50xx, Emeritus Professor Alice Tang was lying on a comfortable beach chair, holding the hard-to-find fresh orange juice from the ancient earth species, and drowsily enjoying the aesthetically pleasing mecha dance in the center of the field. When she was about to fall asleep, with an exclamation, the student A, who was said to be the genius lead dancer of the Mecha Academy who had only waited for a thousand years, performed a 720-degree spin and jump and landed in front of her. He knelt on one knee and said with an expressionless face: "Teacher, can I mark you?" Alice's hand shook, and half a glass of orange juice worth one hundred thousand kilos spilled on the floor. Alice:? ? ? About settings: The actual situation is this: 1. This is a light interstellar era that was forced to enter due to the destruction of the earth. Ancient humans more than 2,000 years ago fled to the universe in order to survive, but were attacked and died on the way. The ancient earth civilization was destroyed (including species, culture, traditions, etc., All of which were terrible); 2. After humans survived, the environment at that time was too harsh. In order to survive, they could only use all their energy and strength on war equipment such as mechas and spaceships, resulting in a social structure that valued military affairs over civility; 3. So two thousand years have passed, and human civilization has started from scratch and turned into the current era (this pattern only appeared among the nobles, because people at that time respected the ancestors who saved all mankind from the accident of twenty spaceships too much.) Above, chirpy~~ Note: ABO settings Sibling relationship (according to the average age of the new interstellar humans, which is 300 years old, the female protagonist is 2 years older than the male protagonist, which means there is no relationship at all, but they are indeed siblings, hahahaha) The daily life of interstellar love in the light future may be very sweet (after all, I have never had the concept of adding sugar) There are no stars, universe or sea, please enter with caution. Purpose: The continuation of civilization is relevant to everyone