Rising Japanese star Kaoru Mitoma struck a hat-trick after coming off the bench in the second half on Saturday, sparking Royale Union Saint-Gilloise to a 4-2 comeback win over Belgian top-flight opponents RFC Seraing.Entering after the break with Union trailing 2-0, Mitoma quickly helped the home side shift the momentum at Brussels' Stade Joseph Marien.He put Union on the board in the 55th minute with his first Belgian league goal, receiving a through ball at the left of the area and finishing from a tight angle across Seraing keeper Guillaume Dietsch.With Union level from an equalizer by w…READ FULL ARTICLE