[1] He moved to British Columbia in Canada to live with an aunt at the age of 11.
[1] Manu enrolled at the University of British Columbia in 2018 and redshirted his first year on the UBC Thunderbirds football team.
[1][2] The 2020 season was cancelled due to the COVID-19 pandemic, and Manu then started all seven games at left tackle in 2021.
[5] He and fellow Thunderbirds offensive lineman Theo Benedet were both ranked as among the top prospects for the 2023 CFL draft, but opted to return to UBC for a final season.
[6][7] He repeated as a second-team All-Canadian choice in the 2023 selection and helped UBC make their first appearance in the Vanier Cup since 2015.