Shūhei Ishimaru has officiated 73 matches on record, averaging 2.0 cards and 13.0 fouls per game — a lenient official. A player is dismissed roughly once every 15 games, and the spot is pointed to 0.21 times per match. Home teams win 38% of matches under him, drawing 27% and losing 34%. Most active in the J2-League (28 matches). 38% of his bookings come after the 75th minute, with the first card around the 44'. He cards more than 25% of J2-League 2025 referees.