[1][2] His father Osam is from Ghana but emigrated to Germany in the 1980s in order to study, and played in the then third-tier Oberliga Westfalen.
[4] However, he played just once in the Regionalliga West before signing for Schalke 04 II in January 2017 on a contract until 2018, where he failed to make an appearance.
Liga for Würzburger Kickers on 20 July 2019, starting against Bayern Munich II before being substituted out in the 83rd minute for Lion Schweers, with the home match finishing as a 3–1 win.
[8] He scored his first goal in professional football in the reverse fixture with a late equaliser in a 1–1 draw with Bayern Munich II on 22 December 2019.
Liga match away to Preußen Münster on 14 February 2020, 'monkey noises' was directed at Kwadwo from a home spectator, causing the game to be briefly paused while they were ejected from the ground by the stewards.