Wait, Kukui has a kid?
Pokémon
The new home of !pokemon@lemm.ee
Pokémon is a Japanese media franchise consisting of video games, animated series and films, a trading card game, and other related media. The franchise takes place in a shared universe in which humans co-exist with creatures known as Pokémon, a large variety of species endowed with special powers. The franchise's primary target audience is children aged 5 to 12, but it is known to attract people of all ages.
i think it was in anime
Relatives Professor Burnet (wife)
according to his Bulbapedia page, so no legal offspring.
But also according to it,
Prior to the events of [Sun and Moon], a young girl, by the name of Lillie ends up on a beach with a weakened Cosmog by the name of Nebby, in search of Kukui's wife, Professor Burnet. Burnet finds the poor girl and contacts her husband, who then decides to take her in. Professor Kukui allows Lillie to live in his loft at his Pokémon Research Lab on Alola's Melemele Island, but in exchange for this, Lillie becomes Kukui's aide. In the meantime, they learn more about Lillie, and research Cosmog. According to Lillie's Diary in the post-game, she is turned-off by Professor Kukui's appearance of going around half naked and not wearing a shirt. Lillie also appears to have emotional attatchment to both of the professors, seeing them as father and mother-like figures.
Emphasis mine. And edited in, because right now Lemmy keeps wiping my reply and reloading the page every time I dare exit off page to quote Bulbapedia.