Hometown: Tokyo, Japan

Blood type: A+

Favorites: black tea, coffee, grapefruit, liquor

Hobbies: guitar, judo, music composition, swimming

On October 1, 2019, Tsukui revealed that he has been diagnosed with ALS and has been using a cane and wheelchair to help with his mobility.

On February 17, 2023, Tsukui revealed that he has lost his voice and has retired from voice acting as a result of udnergoing a tracheotomy. He is also no longer able to use his arms or legs and only communicates through digital software.