Abilities
20 years ago he may have refused to go pro oversea, and could've thus become the first japanese pro soccer player (Captain Tsubasa arc, chapter 19, page 24).

Coaching
He can give directives to a player during half time (Captain Tsubasa arc, chapter 28, page 44).

Training
He trained Hyuga and Sawada and Meiwa became good in a short period of time thanks to him (Captain Tsubasa arc, chapter 18, page 10).
He also trained Wakashimazu (Captain Tsubasa arc, chapter 26, page 96).

Tactics
Coach Kira has many "themes" for the team:
-"One person one skill": players must display the best, strongest skill or weapon they posess, that nobody else in the team can surpass them in (Golden-23 arc, chapter 2, page 7). It was illustrated during matches by the futsal combinations between Furukawa and Kazami, Nitta's shots, Misaki's passes, Misugi's crosses (Golden-23 arc, chapter 31, pages 14-15), Igawa Gakuto's defense, Soda's crosses from his overflowing overlaps (Golden-23 arc, chapter 79, page 14).
-"Possibilities": according to him, most of the players didn't reach their full maturity, but have hidden possibilities and so wants to try out changing their positions (Golden-23 arc, chapter 2, pages 7-8). It was illustrated during matches by the possibilities they discovered by changing positions (Golden-23 arc, chapter 31, pages 14-15) like the Tachibanas playing as defensive midfielder (Golden-23 arc, chapter 31, page 3), but the "greatest" might be Wakshimazu as a forward (Golden-23 arc, chapter 31, page 8).
-"Feelings": he believes players should convey human emotions in their plays (Golden-23 arc, chapter 2, page 8). It was illustrated when the team wanted to win for the sake of the injured Jito (Golden-23 arc, chapter 31, pages 14-15), Ishizaki's way of playing with fighting spirit (Golden-23 arc, chapter 79, page 16), or when they were playing with the "feelings" of the Tachibanas' "fighting spirit" as well as Wakshimazu and Nitta's "great efforts" (Golden-23 arc, chapter 98, page 12).

These "themes" usually led to "surprises", like Furukawa and Kazami as starters, Wakshimazu playing as a forward in the match against Denmark, Wakabayashi playing against Nigeria, the first appearance of Igawa Gakuto (Golden-23 arc, chapter 68, pages 3 to 6), or the Tachibanas playing as forward instead of Wakshimazu, Nitta or even Sorimachi (Golden-23 arc, chapter 85, pages 16 to 17). They were called "Kira surprise" or even "Kiraism" (Golden-23 arc, chapter 79, pages 12-13).

A 4th theme was eventually added after the match against Nigeria, "Teamwork" (Golden-23 arc, chapter 53, pages 19-20). It was illustrated when Furukawa and Kazami eventually agreed to teach their futsal techniques to the other players (Golden-23 arc, chapter 108, pages 2 to 7).

Kira can put a lot of trust in players to let them handle the team's balance (Golden-23 arc, chapter 79, page 15), using them in a vertical line (Golden-23 arc, chapter 19, pages 14-15), horizontal line (Golden-23 arc, chapter 29, pages 13), in a triangle (Golden-23 arc, chapter 36, pages 7-8), or freely changing positions between center and side (Golden-23 arc, chapter 89, pages 8-9).

He can purposedly make the Tachibanas twins play as forward and use Sawada as well to defend from the front line and put pressure on the opponents with quick moves (Golden-23 arc, chapter 87, page 12).