After time travel, I became the Interstellar Empress

Summary

In the age of star travel, humanity has evolved to possess psychic abilities.

My sister and I were transported to this new reality as a rare species of mermaid, sent to forge an alliance with the humans through marriage.

At the selection ceremony, the governor told us to choose our own partners.

My sister excitedly chose a major with A-rank psychic abilities.

I, on the other hand, chose a captain with a lower B-rank.

As it turned out, the major cheated on my sister while she was pregnant, g