Kokuyo Mid/High Gang, Vongola Famiglia
Lightning and Mist
Collapsable Yari, Dying Will Flame Shoes*
Medusa di Fulmine/Lightning Jellyfish (Inazuma and Raigeki**) - 2 large jellyfish coated in Lightning Flames. They can use the Flames they're coated with to shield attacks, or conversely, electrocute the enemy by releasing Lightning Flames from their tentacles. On a more mundane note, they use the Flames to float about
Vongole di Nebbia/Mist Starfish - When used, a large group of clams, specifically of the razor clam variant. These clams emit Mist Flames in two situations - the first being opening the shell, and the second being when one comes in contact with the shell, simulating the effects of domotic acid that naturally accumulates in clams and other shellfish. Also, because Yuuji has dual Flames, he can mix his Lightning Flames with his Mist Flames when opening this box to summon clams with both the offensive and defensive ability of the Lightning Flame, and the illusion casting ability of the Mist Flame in a similar manner to Torikabuto's Mist Sea Snakes.
Segno Hell Ring, Ballpoint Pen, Vongola Lightning Ring
Yuuji was raised in a rather traditional household, his mother was a housewife, and his father was the owner of a dojo. His father was pretty strict, hammering in things like honor and integrity, among other things. His father, not wanting a weak child on the grounds of 'weak people attract weak people'. Thus he ended up learning Sojutsu, the art of combat with a Yari, and some martial arts focusing on the legs. Note that it as just normal Sojutsu, not some flawless, invincible sword spear
style. Afterwards he ended up joining some competitions involving his styles of choice.
He made his first kill at 14.
It was an accident, he struck a little too hard, and the guy was down, but that changed everything. His family ended up disowning him, and let him fend for himself. However, they did provide him with the money he had saved up, and payed for his education. Albeit, they forced him to go to Kokuyo, which was rather far from his hometown. It was there he ended up getting involved with the Kokuyo Mid/High Gang.
Along the line, prior to his first day of school in Kokuyo High, he came into possession of the Segno Hell Ring. It happened after finding a cheap place to rent, although it happened to be in the next town over. He ended up getting the room below the attic. As per usual, he ended up snooping through the attic and found a very odd shaped ring. He pocketed it, and went on his way. That night he was messing around with it when he ended up summoning his first Dying Will Flame, this event caused him to stay away from the ring for a decent amount of time for fear of spontaneous combustion. Eventually he began using it more, summoning the Flame for mere entertainment value. It was then he noticed an odd pattern between people not noticing him, his moments of writing, and when the Flame was on. Several trial and error runs later, he finally figured out how it worked, and tested it with a bunch of other, different rings in order to see if every ring had those properties. In the end, he was only able to ignite the Segno Ring; some useless indigo rings that were pretty much the same, but worse; and a green ring, which ended up accidentally electrocuting him, so he threw that one away. That experience left a scar on his left palm.
Due to being raised in a traditional Japanese house, Yuuji is a very traditional person in terms of personality. He values honor, hard-work, and loyalty; and speaks in a way similar to how elderly people speak. He's a man of his word, never breaks promises or leaves a debt unpaid. However, just because he's polite doesn't mean he's a nice person. He always speaks his mind, no matter how brutal the truth is. He's against killing, but that doesn't mean he won't just torture you until you're on the brink. So on and so forth. He has a basic understanding of rings and Flames.
*I think it qualifies because Lightning Flame + Kick = Ouch
**Lightningbolt and Thunderbolt, respectively