His fame grew when he became the first pure Japanese official housemate in Pinoy Big Brother: Otso, a reality TV show for Filipinos.
The "Konnichi-Wonder Vlogger ng Japan", as he is called, Fumiya finished the 9-month running show as the 5th big placer.
[2][3] In September 2024, Fumiya launched a joint TikTok page with his girlfriend, Kate Valdez, called Onigiri Lovers.
After his high school graduation, Fumiya started living alone in Tokyo while pursuing his degree in Hotel Management.
He joined the hospitality workforce after his graduation from school and worked in a hotel in Ginza as a bell boy.
He resigned from his hotel job after two years and decided to pursue his dream of establishing his own clothing line.
He attended and documented his audition for his vlog content and he was able to pass all the screenings and became an official PBB OTSO housemate.
On March 20, 2020, a few days after Metro Manila, Philippines was placed under Enhanced Community Quarantine to prevent the spread of the COVID-19 pandemic, Fumiya travelled back to Japan.
[8] Fumiya established his YouTube channel, FumiShun Base, with his younger brother, Shunya, on December 2, 2015, but they did not post their first video until September 6, 2016.
While studying in the Philippines, he continued to upload videos in his YouTube channel as a means to update his parents of his whereabouts.
[10][11] Some notable vlogs were his song covers of Iñigo Pascual’s Dahil Sayo, Daniel Padilla’s Simpleng Tulad Mo, Juan Karlos’ Buwan, Maja Salvador’s Dahan Dahan, and Ex Battalion's Hayaan Mo Sila which was featured in Rated K.[12][13] Other notable vlogs are his auditions to PBB Otso in Araneta Cubao and Cebu.
With the growing demand from Japanese subscribers, he established the Hiragana FumiShun Base (ふみしゅんべーす) YouTube Channel on April 13, 2020.
His FumiShun Base channel went back to its original content and the change was felt in the faster rise of subscribers.
[15] On May 31, 2024, Sankai, as content creator uploaded a 42-minute "My Last Vlog," announcing his YouTube channel "FumiShun Base" closure to focus on himself as musician instead.
[20] On February 29, 2020, in adherence to government policies for the prevention of the spread of the COVID-19 pandemic, the museum was temporarily closed until further notice.
He has also guested in multiple episodes of ASAP, Magandang Buhay, Rated K, Minute to Win It, Gandang Gabi Vice, and Tonight with Boy Abunda.
In April 2020, Fumiya, together with his tandem, Yamyam Gucong have their first show as a host, Highway Harvest, became available through TFC Online.
[27] His guests included the rest of Team LAYF (with Lou Yanong, Andre Brouillette, and Yamyam Gucong), Jeremy Glinoga, MNL48, AC Bonifacio and Alex Gonzaga.