Asuma Sarutobi
The Son of the Third Hokage. Heir to the Will of Fire. His jutsu deal +10% damage and have 15% more area.
Jutsu kit
Kit jutsu show up more often on level up. Some are only learned later in the saga, as in the series.
Asuma's blades, sharpened by wind. A wide slash in front of you.
A cloud of burning ash in front of you. One spark and it all goes up.
A blade of wind thrown forward that comes back cutting everything.
A whirlwind spins out from you. Pushes back and slows nearby enemies.
Plus every Academy jutsu: Shuriken Kunai Shadow Clone Jutsu Poisoned Senbon Paper Bomb Kunai Kunai Rain
Secret technique and evolutions

Secret technique: Katon: Burning Ash

+20 health, +15% damage
Secret technique: Futon: Vacuum Blades

+30 health, +20% damage, +1 armor
Secret technique: Storm of Ash and Wind
Secret techniques in action
Every form has its own secret technique, with its own effect. The strike hits every enemy around the ninja.
7 costumes: you'll find them with their conditions on the ninja's sheet, in the game. The almost-ready ones are in What to do now.
Possible combined jutsu
Fusions Asuma can obtain alone at the Seal Altar.
Build tips
His kit's natures: Wind Fire.
Strong against
Legendaries weak to at least one kit nature: Haku, Orochimaru, Shukaku, Kakuzu.
Tools that boost the kit
Sensei of Team 10: after chapter 1 if it's your team, otherwise with the Bell Test when you have all their genin