Two Become One

Two Become One (めぐりあう二人) is a Keychain for Sora's Keyblade that is found in Kingdom Hearts II Final Mix, and a form of Roxas's Keyblade that is found in Kingdom Hearts 358/2 Days. In Kingdom Hearts II Final Mix, it is obtained by defeating Roxas at Memory's Skyscraper. Two Become One represents Roxas, a fact borne out by its obtainment, appearance, and ability, Light & Dark, which causes the activation of any Drive form to put Sora in either Anti or Final Form. In Kingdom Hearts 358/2 Days, Roxas and Xion can wield this weapon by equipping the Zero Gear ⑤ with two Ability Units.

Design
Two Become One is one of the more sword-like Keyblades, possessing a notched blade with a noticeably sharp edge. Its color scheme is derived from a fusion of Roxas's Oathkeeper and Oblivion Keychains, and the handle is composed of the same checkerboard pattern on Roxas's wristband. The Keyblade's design is also covered with references to Roxas's Nobody nature; the usual Nobody thorns make up the teeth and rainguard, the chain links are heavily stylized versions of the Nobody Emblem, and the full Nobody Emblem adorns the hilt. The token itself is Roxas's Nobody-thorn charm.

Gameplay
In 358/2 Days this keyblade's ground combo begins with a thrust forward, followed by a diagonal vertical strike from the right side, and continues with a lightning-fast array consisting of a horizontal slash left, the same slash right, a vertical downward slash and ends with a jump back and a rushing diagonal spinning slash. You can change the combo and end it after the first upward slash by pressing Y, this will cause a jump into the air and a slightly angled spinning slash. The aerial combo is a rush forward and two downward spinning slashes from either side.