A week later, Gokudera pulled his Juudaime aside, an ecstatic look on his face. He produced a box Tsuna had never seen before – it was red like his storm ring box, but it had a skull on every face except the one with the hole in it.
"Using the assistance of the Vongola weapon tuner, I managed to create this," the Storm Guardian explained. After inserting his ring into the hole, a mini cannon with a skull on the edge of its barrel attached itself to Gokudera's right arm.
"I dub it the Flame Arrow. So, Juudaime. Let's go hunt some box animals!" he declared happily to his Juudaime.
/
The duo ended up searching the whole of Namimori before they gave up. Reborn had decided to go on a sudden trip overseas so there was no one to advise them on where to find the box animals.
"I at least want to try out the Flame Arrow," Gokudera grumbled, clearly disappointed with not being able to help Tsuna. After arriving at an open field, Gokudera aimed his cannon at the sky, shoved some lit dynamite into it and fired.
The result looked almost like a firework of storm flames.
At this, the grey-haired boy's knees buckled underneath him as if he'd given up already, but a hand on his shoulder cut short his despair. His Juudaime had come to cheer him up, naturally.
"It just needs some work," Tsuna commented as the two headed back.
/
The 'firework' had apparently split up into lots of smaller flames and rained down on people's houses, so an angry mob was waiting for the ones who'd started it.
"It's going to need lots of work!" Gokudera cried, doing a 180 and retracing his footsteps while sprinting.
Tsuna, who'd changed into Cambio Forma mode, told the Storm Guardian to get on his back and so the two fled the scene.
However, this also made Tsuna skip school for a week due to back pain.
The aforementioned weapon tuner is Giannichi, not Giannini.