|Arc||Inheritance Ceremony Arc|
|Volume||Vongola vs. Simon Arrives!|
Vongola Gear of The Sun
After Ryohei knocks off Koyo's glasses, he wonders why Koyo said that he is just getting serious. Koyo stops releasing his Forest Flames, stating that it won't be necessary. Ryohei then charges at Koyo again, telling him to show his true strength. Koyo counters by sending a barrage of punches. The two fight and Ryohei continues to graze himself with Koyo's punches. Without his glasses obscuring his vision, Koyo is able to see through Ryohei's movements and identify where Ryohei's flow of blood and even the activity of his cells. Ryohei wonders why Koyo's attacks are all speed and no strength when Koyo lands a hit on his left arm.
Suddenly, Ryohei yells in pain and clutches his arm. He asks Koyo what he did, in which Koyo replies that he just hit Ryohei's Killer Point. Koyo explains that his eyesight has been increased to an unimaginable level, being able to see nearly everything since his glasses are only used as a means to obscure his vision. Tsuna and Gokudera are surprised about what had happened and Gokudera snatches Koyo's glasses from Lambo to see if Koyo really couldn't see through them and is shocked to find that it's true. Koyo then charges at Ryohei who is unable to move his left arm. Koyo looks at Ryohei's Killer Points again and lands several punches on each point. Three more sections on Ryohei's Bangle of the Sun lit up because of this. Ryohei starts moving back because he didn't want to lose his right arm as well. Koyo angrily taunts Ryohei for this and continues to follow and attack him. Ryohei sees something in his attacks and taunts Koyo by telling him to fight with him for 12 rounds. An irritated Koyo uses his Forest Flames again but that is what Ryohei wanted. Reborn notices that Koyo is now attacking in a straight way and thinks that Ryohei knows it too. Koyo lands another punch on Ryohei but his eyesight suddenly starts shrinking and eventually goes blind for a moment. Ryohei sees this opening and attacks Koyo with his Sunshine Uppercut...