Read at your own risk.
The ABO setting is full of headcanons / multiple side pairings / mostly slice-of-life, slow-moving plot
The whole story is written in advance, so read with confidence.
Silly version
Shu He: Not one alpha is dependable!
Serious version
The Tierwen Incident was a turning point in Shu He's life. From that day on, he finally existed in this world as a "person."
He would keep those secrets, known only to him, forever, until his body too returned to the earth and fell silent.
A few notes
First: Kucha means bitter tea. It's a strong tea that's purely bitter. It smells like tea leaves! Tea-leaf aroma, tea-leaf aroma!
Second: Since the update schedule was changed, the order of the author's notes may be off in some places.
Third: The story is complete, and revisions and a reboot are now underway. The main plot will stay the same, with details adjusted and possibly some bonus chapters added.