In 2018 and 2019, Ieizumi played 21 times in the Japan Football League for the university affiliate side Ryutsu Keizai Dragons Ryugasaki and scored his first goal for them in a 3–3 with MIO Biwako Shiga.
[2] In 2021, he played almost every game in the JUFA Kanto League 1 season, scoring two goals and helping Ryutsu Keizai University to win the championship.
[4] In December 2021, it was announced that Ieizumi would be signing for newly promoted J3 League team Iwaki FC for the 2022 season.
[5] He made his debut for the team in March in a 1–1 league draw with Kagoshima United and scored his first goal in a 5–0 win over Vanraure Hachinohe.
[6][7] At the end of the 2022 season, Ieizumi had helped Iwaki gain promotion to the J2 League for the first time in their history playing in 33 of a possible 34 games.