The 20-year-old international footballer has agreed to a contract that will keep him with the team until 2030.
According to the club, Takai was identified by Technical Director Johan Lange as a talented player with great potential.
As part of Tottenham's transfer strategy, they have been scouting and signing young and affordable players from various countries, including England and Japan.
Takai's impressive skills have earned him the title of J-League's Young Player of the Year in 2024, a testament to his growth and development as a footballer.
