Kiana and the Captain's Bizarre Adventure

Whenever Kiana stands on the bridge gazing at the boundless starry sky, she remembers her past as a renowned aerial split-splits cleaner. At this moment, she always looks at the red-haired man beside her with a reproachful gaze. "Seriously, we both time-traveled together, so why did you become the captain?" The red-haired man can only look at Kiana helplessly. "Can I take that as you having some kind of grudge against your childhood friend?" "How could I!" Kiana says, then leans affectionately into the captain's arms. PS1: The timeline is after the complete end of the Post-Honkai Impact 3rd incident. Kiana, the captain, and the Tree of Will's transaction began...