Tokyo Verdy

In 2014, aged 19, Anzai was promoted to Tokyo Verdy's first team squad, taking the number 34 shirt. He made his debut in a 3–1 J2 League defeat to Matsumoto Yamaga in the first league game of the 2014 season, where he played the full 90 minutes.^[7] In May 2014, Anzai scored his first professional goal in a 1–0 league victory over Kamatamare Sanuki.^[8] Anzai made more appearances than any of his teammates in his debut season, playing all but one league game including 34 starts and playing over 3000 minutes of football.^[9] Verdy however did not have a successful season and finished in 20th out of 22 teams, narrowly avoiding the relegation playoff game.^[10]

For the 2015 season, Anzai was given the number 2 shirt at Tokyo Verdy, highlighting his prominence in the first-team squad. In pre-season, Anzai visited English Premier League club West Ham as part of a week long training camp, where he met the likes of Andy Carroll, Alex Song and Mark Noble. Playing alongside such players, Anzai said that he felt the biggest difference was the physicality of the game in England and started more strength training on his return to Japan.^[11][12] He went on to make 35 league appearances in the 2015 season, helping Verdy to a much improved 8th-placed finish in the J2 League.^[13] Tokyo Verdy continued to be inconsistent performers in the league, finishing the 2016 season in 18th place and the 2017 in the play-off places, where they were beaten at the semi-final stage by Avispa Fukuoka.^[14] Anzai continued to impress and was ever-present throughout, and by the end of the 2017 season was playing under his third manager at Verdy, following the dismissals of Yasutoshi Miura and Koichi Togashi. Manager Miguel Ángel Lotina also started to push Anzai further up the pitch and started to be used increasingly as a right midfielder from the middle of the season.^[15] By the end of the 2017 season, Anzai had made 153 appearances for Verdy, scoring 6 goals.

Kashima Antlers

After 12 years at Tokyo Verdy, in December 2017 it was announced that Anzai would be joining J1 League club Kashima Antlers, wearing the number 32 shirt.^[16] Although disappointed not to help promote his boyhood team Verdy to the top division, he would get a chance to play alongside Atsuto Uchida, a right-back and fellow countryman that he had long admired.^[17] He made his debut for Kashima in an AFC Champions League 1–1 draw with Chinese Super League club Shanghai Shenhua.^[18] This was also his first appearance in an international competition. He made his J1 League debut in the same month in a 0–0 draw with Shimizu S-Pulse.^[19] Anzai quickly became a regular starter, however he was primarily played as a left-back rather than his usual right-back position, taking the position from Shuto Yamamoto. He scored his first goal for Kashima in July, in a 6–2 league victory over Kashiwa Reysol.^[20] Receiving the ball in his own half, he dribbled through the Kashiwa defence at full pace and produced a fine finish past the goalkeeper.^[21] Such was the quality of the goal, that it won July's Goal of the Month competition.^[22] Anzai played a total of 28 league games and scored three goals in his first season, in spite of a knee injury suffered in March that kept him sidelined for a month.^[23] In November 2018, Kashima won their first ever AFC Champions League title after a 2–0 aggregate victory over Iranian club Persepolis, with Anzai coming on as a substitute in both of the finals games.^[24] This was his first piece of silverware as a professional player. Anzai played in most of the Champions League games, making 10 appearances in total, but was increasingly used as a wide midfielder rather than a full-back, including in the finals. As reward for Kashima winning the Champions League, Anzai went on to represent them at the Club World Cup, making three appearances in the competition including coming on as substitute in their 3–1 defeat to Real Madrid in the semi-finals.^[25] Anzai made a total of 50 appearances in the 2018 season across five competitions, but ended the season battling for a place in starting line-up, with Shuto Yamamoto, Daigo Nishi and Atsuto Uchida all seemingly preferred in the full-back positions.^[26]

For the 2019 season, Anzai was given the 22 shirt after Daigo Nishi transferred to Vissel Kobe.^[27] It didn't take long before Anzai had become the team's first-choice left-back in place of Shuto Yamamoto and his form had caught the eye of national team coach Hajime Moriyasu, who called up Anzai to represent Japan in series of games in March.^[28] After the international games, Anzai's good form continued and after 15 league appearances Anzai had scored three goals and made three assists.^[29]

Portimonense

Mid-way through the Japanese league season in July 2019, it was announced that Anzai would be transferring to Portuguese Primeira Liga side Portimonense, joining compatriot Shūichi Gonda in their squad.^[30] Anzai had made no secret of his desire to one day play abroad and at 24 years old he felt that it was now or never to play in Europe and also an opportunity to cement his place in the national team squad.^[31][32] Anzai took the number 22 shirt, mirroring his role model Atsuto Uchida who used the number when he transferred to Schalke 04 in 2010.^[33] Anzai made his debut for Portimonense in August 2019 in a 2–0 Taça da Liga win against Academica.^[34] He played the full 90 minutes and provided an assist for the second goal by Aylton Boa Morte.^[35] He also didn't have to wait too long to score his first goal for the club, scoring in a closely contested 3–2 defeat to FC Porto in September.^[36] Anzai was a regular starter in the first half of the season, however Portimonense were not performing well in the league and after a 3–0 defeat to last-placed team C.D. Aves in January, manager António Folha was dismissed.^[37] Once the league season had restarted after the break between March and June due to the COVID-19 pandemic, Anzai was used more as a substitute as Emmanuel Hackman appeared to be the new manager's first choice right-back. After winning only 7 games in the season, Portimonense finished in 17th place and were due to be relegated, but due to a technicality the LPFP relegated Vitória de Setubal in their place, so Anzai would continue to play top-flight football.^[38][39] For the 2020–21 season, Anzai staked his claim as the first-choice right-back, playing in 31 of the 34 league games throughout the season. He was unable to contribute as much as he would have liked offensively, only registering one assist and scoring no goals throughout the season. Nevertheless, Portimonense again struggled in the league and finished in 14th place, only 4 points clear of relegation.^[40]

Return to Kashima Antlers

Anzai was contacted by Kashima's Director of Football Mitsuru Suzuki asking if he wanted to return to the club. Ideally, he wanted to keep playing in Europe but also wanted to give himself the best chance of retaining his place in the national team setup.^[41] After two years in Portugal, in July 2021 it was announced that Anzai would be rejoining Kashima Antlers, finally claiming the prestigious number 2 shirt.^[42] He joined at the end of the Portuguese season, but it was mid-way through the 2021 J1 League season. Anzai made his first appearance after re-joining on gameweek 23 in a substitute appearance against Shonan Bellmare.^[43] After a few substitute appearances, it wasn't long before Anzai made his first league start in gameweek 26 – a 4–0 win over Shimizu S-Pulse.^[44] After this point, he was back to being a permanent fixture in the starting XI, largely replacing Katsuya Nagato in the left-back position. He went on to make 20 appearances across all competitions in his half season with Kashima.

In the 2022 season, Anzai cemented his place in the team and played 45 games throughout the year, starting in almost every league game.

Club

As of match played 3 December 2023^[53][54][55]

International

As of match played 9 October 2020^[56]

Club

Kashima Antlers

• AFC Champions League: 2018

Individual

• J1 League Goal of the Month: July 2018