Jun Light Bolt is out of Special Groove (Special Week), who never won a race but has produced five winners from six runners, two of them stakes winners. They include his year-older half-brother Groove It (Lord Kanaloa), a Group 3 winner in Japan who was also placed at Group 2 level.

Second dam Sonic Groove (French Deputy) was unraced and has five winners from 11 runners.

Third dam Air Groove (Tony Bin) was Japan's Horse of the Year in 1997 and champion older mare. She won seven times at stakes level and finished second twice in the Gr.1 Japan Cup. She produced the Japanese champion Admire Groove (Sunday Silence), a multiple Listed winner, and Rulership (King Kamehameha), winner of the Gr.1 Queen Elizabeth II Cup, twice placed at Group 1 level and now a sire. Her other winners include Forgettable (Dance In The Dark), a Group 2 winner, and Gullveig (Deep Impact), a Group 3 winner.

Admire Groove is the dam of the champion three-year-old colt Duramente (King Kamehameha), a dual Group 1 winner and sire, and of the Group 2-placed Admire Sceptre. Gullveig is the dam of Andvaranaut, a Group 2 winner who was Group 1-placed, and of the Group 3-placed Vanaheim.

Special Groove has a juvenile filly, Pure Groove (Drefong), who has made two starts, and colts by Drefong, born in 2021, and Lord Kanaloa, born in 2022.