Don't say it's because he's an Android
Over the next few days Xi Zirui delivers some more of the cargo, raising up his delivery rate all the way to 60%.
Han Yu stays in the Irregular, and doesn't even bring up going stationside again.
All of Xi Zirui's attempts to get some information out of him end up frustrated. He's convinced that his desire to name the cat "Little Thunder" is a coincidence, and shows absolutely no sign of remembering his past life in the previous worlds.
Which, he's an Android, so Xi Zirui feels silly for having thought it possible in the first place.
The chance of a soul reincarnating in an artificial body is too much for him, especially considering he isn't even religious in the first place and has never spent time considering these possibilities.
He's returning to the ship from his latest delivery when he finds Han Yu crouching on the floor trying to entice Little Thunder out from under a cupboard with a piece of string.