Born in San Mateo, California and raised in the Shoreview community, Asiasi played high school football on both offense and defense at De La Salle High School in Concord, California.

[1][2] During his senior season, he hauled in 17 catches for 311 yards and five touchdowns on offense, and finished with 49 tackles, five pass breakups and four sacks on defense.

[5] Asiasi was personally recruited by Michigan head coach Jim Harbaugh during a visit to De La Salle High School in January 2016.

[12] After sitting out the 2017 season due to transfer rules, Asiasi made his debut for the Bruins in 2018.

[19] During the Patriots' Week 17 game against the New York Jets on January 3, 2021, Asiasi recorded the first two receptions of his career and his first receiving touchdown during the 28–14 win.

[27] On January 31, 2025, Asiasi signed with the DC Defenders of the United Football League (UFL).