Did a little bit of research on Luka. The most interesting tidbit is that he is a cousin of Chicago Blackhawk great Jonathon Toews.
Luka's father is a former professional basketball player from Canada who apparently married a Japanese woman and moved to Japan, where he is a coach of a professional women's team. Luka is a Japanese native who is currently attending a prep school in New England.
Luka has an older brother Kai who played D1 ball for UNC Wilmington, where as a freshman he was second in the nation in assists, averaging over 7 per game. He abruptly left the team in the middle of his sophomore year to play professionally in Japan.
Here is Luka's Verbal Commits page:
https://www.verbalcommits.com/players/luka-toews He's listed there at 5'10", but I've seen him listed elsewhere at 6'1" or 6'2". He has offers from a half dozen or more schools including two Ivies.
Watched just a little video. He reminds me a bit of Brock Harding, although Harding seems a little quicker. Has good court vision and good mechanics on his jumper.
An intriguing prospect.