Running fire only moves up to mid range so its limited.
( Katon: Ryuka no Jutsu ) - Fire Release: Dragon Fire Technique
Rank: C
Type: Offense
Range: Short/Mid
Chakra Cost: 15
Damage Points: 30
Description: The user will perform four handseals Snake β Dragon β Rabbit β Tiger , and breathe fire along a cord or any other type of long object, which rushes forward in straight line catching the enemy on fire. A line of enemies can be used as the conductor as well. The flames are meant to target, and assault the enemy's upper body just like a projectile weapon.
Okay this is a rather simple technique nothing to much about it, you will get a cord and send it towards the opponent, then using 4 hand seals you breathe through the cord and send a stream of fire through towards it burning the opponents upper body when caught. Being a stream technique you will have to release it constantly a great thing for the technique is you can use many opponents as a conductor to attack multiple targets. Though its a very straightforward technique. It in all honesty is useless since their are other jutsus quicker to perform without a cord. You can easily but the cord when it wraps around or gets to you.
( Katon: Karyudan ) - Fire Release: Fire Dragon Bullet
Rank: C
Type: Offense
Range: Short/Mid
Chakra Cost: 15
Damage Points: 30
Description: The user exhales a flame breath from their mouth after making the tiger hand seal. This technique can be used in conjunction with Earth Release: Earth Dragon Bullet to ignite the projectiles fired by the latter technique, making it more devastating.
The user will gather katon chakra and release a bullet of fire after doing one hand seal. This is again quite simple nothing much to it really, it is mainly use to supplement earth dragon bullet which will ignite it into a hot rock material. It can still be used by itself to send a basic fire bullet projectile which can distract the opponent or supplement basic combo attacks. Ways to counter can be with a simple wall or any water jutsu is easy enough.
Perform the technique: Omoi is hearing senpai's instructions while trying to take a nap, when Noni senpai notices that Omoi lacks of interest he hits him in head and says that he need to be more focused in the training, After hearing all senpai's instructions he takes a cord and add his chakra to it and the throws it at the dummy and binds it creating Omoi a opening to use the new jutsu, after performing the hand seals of Snake β Dragon β Rabbit β Tiger, Omoi concentrates all his reamining chakra into his stream that enfuses with the cord and burns the dummy. "Yoooshhh Bring It On"
Creative uses/strengths: It's not a helpful jutsu but it has a great advantage, you can use your opponents as conductors of fire to attack multiple targets at a time.
Drawbacks/counters:. As i said this jutsu is not helpful and has great disadvandages too, for example the when the user sends the cord towards the opponent he can easily cut it with a kunai making the jutsu useless and unuseful for battles.
Perform the technique: Determined as ever Omoi makes the hand seal of Tiger and starts concentrating his raw fire chakra into all his body and when he reached his limits he exhales a flame breath from his that looks like a bullet of fire that reachs the dummy burning him, this maked Omoi more calm because he was really nervous and he thinked that he couldn't do the jutsu succesful. "This Was Really Hard !!!"
Creative uses/strengths: It can be a good combo with earth fragon bullen no jutsu since it can ignite the jutsu and make the rocks hot this combination can be really useful in a lot of battles, also this jutsu can be used as a projectile to distract or can supplement basic combo jutsus
Drawbacks/counters:. This jutsu has disadvantages too, it has a lot of ways to counter this jutsu, the opponent can counter this jutsu by creating a wall it can easily deflect the jutsu by chakra jutsu that can extinguish this jutsu.