is a Japanese actor and singer who is a member of boy band Kis-My-Ft2 and its derivative group Busaiku () under Starto Entertainment. His nickname is Nika and Nika-chan.
Nikaido's older sister was a fan of the Kinki Kids and sent Nikaido's resume to the Johnny & Associates when he was 10 years old. He said his sister told him that he was going to a Kinki Kids concert today and took him to the audition site. After auditioning, he joined Johnny & Associates in February 2001. At the same audition venue were Toshiya Miyata and Wataru Yokoo, who later became members of Kis-My-Ft2.
He was only 10 years old when he entered show business, and it is said that he had a rebellious period due to the frustration of not being able to CD debut quickly. At the Johnny's, which had a strict hierarchical relationship, he surprised everyone by calling his seniors without an honorific title. When he met Shingo Katori of SMAP, the most successful group in Johnny's at the time, he scared everyone by saying, "Who are you?." But he is said to have had a strange charm that did not make people hate him for it.
After joining several groups as a trainee (Johnny's Jr.), he was selected as a member of Kis-My-Ft2 in 2005, and he made his CD debut with Everybody Go on August 10, 2011, seven years after their formation.
In 2001, he made his first drama appearance in Fuji TV's "NO KISS".
In 2011, he made his first film appearance in the movie "Ogawa no be".
On December 13, 2013, Busaiku was formed from Kis-My-Ft2 with Kento Senga, Toshiya Miyata and Wataru Yokoo produced by Masahiro Nakai who was a member of SMAP.
He is physically strong and a good acrobat, often performing somersaults and backflips at live shows. He is also a good rapper and often raps in Kis-My-Ft2's songs. In Kis-My-Ft2, he is in charge of live direction.
He loves solo camping and opened his personal official YouTube channel on the theme of camping in December 2023.
On September 15, 2024, he announced that he would take a temporary hiatus due to health problems. He had been absent from the final day performance of Kis-My-Ft2's concert tour Kis-My-Ft2 Dome Tour 2024 Synopsis on September 8 due to health problems.
On January 10, 2025, it was reported that Nikaido would return from hiatus and resume his activities. On January 18, 2025, Nikaido held a return press conference via live streaming on Kis-My-Ft2's YouTube page. In it, he revealed that the cause of his hiatus was that he had problem with his liver and that he had fully recovered.
Starting in April 2025, Nikaido's first solo variety show, Nika Game (Japanese: ãÂÂã«ã²ã¼ã ), aired for a total of four episodes. The program was spun off from a segment of Kis-My-Ft2's variety show Can We Do It for 100,000 Yen? (100,000 Yen de Dekirukana).
Although produced as a variety program, its title was deliberately reminiscent of the South Korean drama Squid Game. Because the English word "squid" is translated as "ika" (ã¤ã«) in Japanese, the series became known in Japan as "Ika Game", which closely resembles the sound of "Nika Game". For the first broadcast, some costumes, set pieces, and the large Young-hee doll from Squid Game were borrowed.
In its renewed format, Nikaido appeared as one of the three main cast members alongside Timelesz's new member Shuto Inomata and comedian Kemuri Matsui. Although broadcast in a late-night slot, the show gained popularity for its unique concept in which Matsui and guest performers attempted to anticipate the unexpected answers and ideas of Nikaido and Inomata to various English-language questions. Following its positive reception, a one-hour special was produced in June, an event was held in August, and the show was later confirmed to become a regular series starting in October.
Masahiro Nakai is known for taking care of his junior members of Johnny's, and Kis-My-Ft2 members are said to be especially fond of him as his direct juniors. In 2016, four members of Busaiku had dinner with Nakai, who had produced busaiku, Nikaido was given a luxury watch by Nakai. The watch was a Franck Muller wristwatch that Nakai bought it for himself on his 30th birthday, Nikaido jokingly asked, "It's a nice watch. I want it," and Nakai removed the watch on the spot and gave it to Nikaido as a real gift. Since then, Nikaido always wore this watch, appeared on TV and at concerts, and at every occasion mentioned that it was a watch given to him by Nakai. Nakai had told him, "When you turn 30, buy your own watch," so in 2021, the 10th anniversary of Kis-My-Ft2's debut, Nikaido bought a limited edition watch at Franck Muller. Nikaido is said to have great respect for Nakai, and often appears at Kis-My-Ft2 concerts wearing a hat, as Nakai did when he was in SMAP.
For activities as a member of Kis-My-Ft2, see Kis-My-Ft2#Group activities.