Genji is a High-damage, High-mobility charater in the right hands,but He's a hard charater to master. A number of players will pick him because he's a cool cyber ninja
Genji might be the only cyber ninja in Overwatch, but there are plenty more hero's to learn and master throughout the game.
Primary: Shuriken
Genji Has one of the smallest clip sizes with his Shuriken. These are low-damage, high-precision weapons and Genji can throw three at a time, either in quick succession or all at one in a fan spread with his secondary fire. Primary fire is for medium to long range, while secondary is for close up attacks. Don't use these like other primary weapons it's not like a gun, mostly used to soften up opponents for your bigger attacks
Cyber Agillity
This is not technically a move for Genji, it's actually his passive, but it's worth exploring. Genji can climb walls and do a double jump mid air. These abilities help Genji get around. The wall climb is vertical only, not horizontal like Locio's wall run: just aim towards a wall and Genji will run up it. Use this to get height before jumping over a wall or barrier
Deflect
This is Genji's bread-and-butter move, deflect incoming projectiles in the direction of Genji,s crosshair. For two seconds, most attacks are redirected elsewhere. Deflect does not work on certain channelled weapons, including the primaries of Mei, Winston,Zarya. It also blocks melee attacks
Swift Strike
Genji Dashes forward and slices with his katana. You can use this just as an attack,but it's also rather good movement tool. It moves forward in whatever direction you're facing, even up or down. That's means you can use it to crossover certain barriers or get beside the enemy team. Swift Strike followed by a melee attack is your primary form of attack as genji. The Shuriken weak the target, Swift Strike closes the gap, and the melee attack hurts.
Genji's Ultimate: Staying late
Genji pulls his dragonblade out of it's sheath, becoming a pure melee charater for 8 seconds. You can't throw Shuriken, as your primary fire slashes with the sword instead. Each sword slash does a great deal of damage, so it's great move for cleaning out a cluster of opponents