Honkai Star Rail: The Black Tower Husband is the Conservation Envoy

[Single female lead, Black Tower + OOC apology + heavily modified + no system + lighthearted story (probably)]

Lu Yan awakens from a stone and is rescued by the genius Black Tower lady. He is also noticed by Kripper and becomes a rare "Guardian Token Envoy" in the universe.

After joining the Black Tower space station, he not only beat up the Zerg swarm and fought against the antimatter legion, but also became Black Tower's nominal fiancé because of a bet.

However, this messenger who "emerged from a stone" was soon drawn into a far greater interstellar conflict: corporate recruitment, rampant insect plagues, and even a plot to exterminate the Grand Sovereigns followed one after another.

Black Tower, a member of the Genius Club, is arrogant and sharp-tongued, yet she is exceptionally indulgent towards Lu Yan—giving him dolls, accompanying him shopping, and arranging an engagement...

What untold secrets are hidden beneath these appearances?

"Black Tower, the bellflowers are blooming, and the wedding we've been waiting for is finally about to take place..."

"Isn't this how it should be? But why did you break your promise..."

When all the beauty vanishes like a dream, and the cruel truth is revealed, what choice will Lu Yan make to reach the ending of his dream?