You're the first person on the base I've seen using a Fire jutsu after a Water jutsu. Lmfao. The Fireball would get extinguished upon contact with the Water tech. :| And your Suiton tech needs some prep time as seen in the anime. >.> My kunais would reach short range of you and then your Water vortex would disperse them in random directions. Also, last note..you would be in the centre of the Water vortex, and cannot see me, as well as I can't see your position, and if you spit out the fireball, it would just hit the vortex surrounding you and burst into a maelstrom, getting extinguished by the gigantic vortex and form a large amount of steam around you. However, I'll continue assuming you've directed your Water vortex as well as your Fireball toward me.
As the projectiles were released, Hashirama saw how the Uchiha prodigy outstretched his hands, as water was being materialized around him, forming a gigantic vortex, as it dispersed the kunais upon contact. Brushing his foot and concentrating, he gathered a large amount of chakra and spit out a gigantic torrent of Water from his mouth after weaving a single handseal(primary specialty) which his opponent obviously could not see, due to him being in the centre of the Water vortex. The torrent clashed with the Wave and moved on forward, as a hissing sound was heard, to Hashirama's surprise. A large amount of steam was formed, short range of Shisui, and he understood that he used a Fire style jutsu following his Water attack.
(Suiton: Daibakufu no Jutsu) - Water Release: Great Waterfall Technique
Rank: A
Type: Attack
Range: Short-Long
Chakra cost: 30
Damage Points: 60
Description: After doing the needed hand seals Tiger → Ox → Monkey → Rabbit → Ram → Boar → Ox → Horse → Monkey → Tiger → Dog → Tiger → Snake → Tiger → Ox → Monkey → Rabbit → Bird, the user will form a gigantic vortex of water in the form of a ring in front of him. It will then shoot a gigantic torrent of water that extends water over a large scale, surges upon impact and rises up to several dozen meters high only to collapse down, forming massive waves all around as it does. The effect is such that as its collapsing it resembles a waterfall, hence the name of the technique. In doing so, it resembles a huge wave, with tremendous power that can hollow out the ground. What remains after that technique's utilization is reminiscent of no less than the aftermath of a natural disaster. This is a considerably advanced ninjutsu, and activating this technique requires a fair amount of chakra. The normal use of the technique requires a water source which is manipulated into the technique but some users have shown the ability to use the technique as a water stream exhaled from the mouth and forming more of a gigantic barrage/stream/wave of water rather than the more intricate and complex use of the main application of the technique.
Note: Can be used with a water source or by using one's own chakra to exhale the technique without the need for a water source nearby.