While I was rewatching, I noticed that throughout the series, there would be Lal'c narration. For example, in the first episode, when Nono's heading for the train. I figured it out when I got halfway through episode five.>>12901139
Very end of the last episode, we see Lal'c getting ready for Noriko and Kazumi's arrival back on Earth. Remember the WELCOME HOME? Besides, considering how Lal'c was part of that DOUBLE INAZUMA KICK, and how Nono idolized Noriko, there's a pretty good chance they meet.