Cut harusame noodles into bite-sized pieces using kitchen scissors. Place them in a microwave-safe container, add enough water to cover, and loosely cover with plastic wrap. Microwave at 600W for 5 minutes, then drain.

Pat the aburaage dry with a paper towel to remove excess oil, then cut into 1cm wide strips along the longer edge.

In a microwave-safe container, combine aburaage, tuna, harusame, and seasonings. Mix lightly, loosely cover with plastic wrap, and microwave at 600W for 2 minutes. Stir to ensure even mixing.