He was brought in to have a rematch against Project D on Happogahara, after they were defeated by them. Tomoyuki took Daiki Ninomiya's EK9 and beat Takumi Fujiwara's downhill record in one try, without pushing the car to the limit. Tomoyuki agreed to use the school's top car, the Spoon-tuned demonstration EK9, at Happogahara.
It is highly speculated that his professional racing outfit seems to be based on the racing outfit that Keiichi Tsuchiya wears during his racing days and his appearances in Best Motoring. The green racing suit, gloves and the red ARD Asic racing shoes are evidence to this speculation. It appears that Tomoyuki had role in the CD Initial D Drama involving Tsuchiya as the basis of the story.
Tomoyuki tuned the Civic the best he could to be able to compete with the FD on the straights, but surprisingly, Ryosuke decided to send out the Eight-Six. He lost the race to Takumi when he steered off the center of the road to avoid hitting a cat that crossed the street near the finish line. Because of this dodging he creates enough space for Takumi to pass him in his Eight-Six. Afterwards Takumi asks Tomoyuki why he suddenly created space for Takumi to pass. Tachi responded that he thought he saw something cross the road and because of his racing reflexes immediately dodged it. Takumi's headlights were turned off as part of his technique.
|Car||Todo School Spoon Civic Type R Demo Car (EK9)|
|Plate||10-547, classification 57, 2-091, Classification 52 (Initial D Arcade Stage Zero)|
|Engine||Spoon 1.8L 16v B16B 260 PS Complete Engine|
|Custom Parts||Spoon SW388 Rims, Momo Steering Wheel w/Spoon Horn Button, Spoon Exhaust, Spoon Mirrors, Spoon Carbon Fiber Hood, Spoon Front Bumper, Bucket Racing Seats, Spoon 11,000 RPM Gauge Cluster, Spoon Damper Kit, Spoon Brakes, and Advan Sticker|
|1. "Project D":||Absent||13. "Motivation":||Absent|
|2. "Full Throttle! Downhill Battle":||Absent||14. "Sad Lonely Driver":||Absent|
|3. "The Most Powerful Man of the Todo School":||Absent||15. "4WD Complex":||Absent|
|4. "Two Pieces of Advice":||Absent||16. "Hillclimb of Fury":||Absent|
|5. "The Starting Line to Victory":||Introduced||17. "The Saitama Area's Ultimate Weapon":||Absent|
|6. "Blind Attack":||Appears||18. "Last Drive":||Absent|
|7. "The Stormy 85 Turbo":||Absent||19. "God Foot and God Arm":||Absent|
|8. "Fateful Battle of FDs":||Absent||20. "The Unmatched GT-R!":||Absent|
|9. "Kyoko's Confession":||Absent||21. "Dogfight":||Absent|
|10. "The Saitama Area's Ultimate Weapon":||Absent||22. "The Sorcerer of the Single-Handed Steer":||Absent|
|11. "Rainy Downhill Battle":||Absent||23. "Endless Battle":||Absent|
|12. "Straightaway of Struggles":||Absent||24. "Never-Ending Challenge":||Absent|
|1. "Natural":||Absent||3. "Dangerous Scent":||Appears|
|2. "The Strongest Enemy":||Appears||4. "Dream":||Appears|
- He attended the Todo School with Emperor member Kyoichi Sudo
- Despite both Tomoyuki and Kyoichi attending the Todo School together, Kyoichi either never used Spoon Sports parts on his car or never drove a Honda while at school, preferring to drive 4WD Mitsubishis like Lancer Evolutions.
- Tomoyuki has a habit of scratching his nose for reasons unknown.