Currently, he plays in V.League division 1 for JTEKT Stings[2] His family consists of his father, Kazuhiko Takahashi, who used to play Baseball; his mother; an older sister; and a younger sister, who are Long jump athletes.

In 2014, Kentaro had registered in Japan men's national volleyball team for the first time and entered University of Tsukuba respectively.

Then, he was dubbed by the then national team coach Masashi Nanbu as one of "NEXT4", the word that referred to 4 players who would be the future of Japanese men's national team, alongside Masahiro Yanagida, Yūki Ishikawa and Akihiro Yamauchi.

[6] In 2016, Kentaro decided to join Toray Arrows volleyball club in V.League and started playing for the team in 2016–17 season.

[7][8] Ahead of 2022 FIVB Volleyball Men's World Championship, he quit national team for family matter.