[8] On 11 August 2019, he made his debut in the opening round of Portuguese League against Sporting CP when he came on as a substitute in the 57th minute.

[13] He scored his first goal after the transfer in the match against Shimizu S-Pulse on 19 August, and contributed to the team's first victory in three games.

[21][22] On 6 November against FC Tokyo, he scored his second hat-trick of the season to keep his spot in the top scorers' ranking.

[23] In addition to being named in the J.League Best XI at the end of the season, Maeda was also co-J.League Top Scorer with Leandro Damiao of Kawasaki Frontale, who had equalled his total of 23 goals for the campaign.

[26] On 6 September 2022, Maeda came on as a half-time substitute for Liel Abada to make his UEFA Champions League debut in a 3-0 home defeat against Real Madrid.

[30] On 24 May 2019, Maeda was called by Japan's head coach Hajime Moriyasu to feature in the Copa América played in Brazil.

Though primarily and initially used by both Matsumoto Yamaga and Yokohama F. Marinos as a left winger, Maeda is able to operate in a number of positions as a forward, including on the opposite flank, as an attacking midfielder or occasionally a second striker.