Yozora

Yozora (夜空, Night Sky) is one of the masterpiece of Hajime Nagumo, the greatest Synergist of Tortus, being his prototype Katana before crafting Juuchi Yosamu. It was later given to Shizuku Yaegashi as a gift

Appearance
Created based on the manga Hajime read as reference for the  basic framework while using his superior transmutation experience to cover up any deficiencies in his initial lack of knowledge and understanding about Japanese swords. Yozora is a Kissaki Moroha-Zukuri-Style Shirasaya Katana with a curved and slender double-edged jet black blade and a black hilt. Yozora have a striking resemblance to one of Japan’s most famous swords, the Kogarasu Maru. Its Saya scabbard is Jet-black made of Azanthium.

Abilities
Yozora is an extremely powerful Katana of supreme craftsmanship, being one of Hajime's masterpieces. Made of compressed Azanthium, the hardest ore of Tortus, Yozora has immense strength and sharpness, able to cut through anything, including steel even when wielded by an amateur swordsman. Yozora is enchanted with the Gale Claw Magic Skill, allowing it to create a wind blade sprouted from the tip. Yozora can sprout more wind blades from the hilt and fire them off like shockwaves. Due to being made from Azanthium, it is is nearly unbreakable, able to not only block but also deflect a powerful Laser beam in the Great Schnee Labyrinth. Hajime would later enchant several Age of God's Magic into Yozora using Evolution Magic enhanced Transmutation Magic and Creation Magic. Yozora can use Gravity Magic to freely control its weight, to draw object towards the sword or push objects away or cut gravity, Spatial Magic to cut through space, Restoration Magic to restore itself from any amount of damage and granted its wielder a restorative aura that slowly healed their wounds, Spirit Magic to cut right through the souls of enemies, Hajime also modified Yozora to made it easier to control, making the spells it is enchanted with in a permanently activated state allowing Shizuku to activate it at full power by thought alone.

Trivia

 * Hajime had originally created Yozora for himself. However, upon completion despite Yozora being an incredibly powerful weapon, Hajime still have some dissatisfaction with its design due to his Otaku personality, believeing that a traditional single edged Katana mounted with a decorated Tsuba Handguard and Tsuka Hilt is much more cooler. Thus, Hajime kept Yozora as a prototype in his Treasure Trove, while creating a second Katana this time by using his lover Kaguya's original Katana as well as what she knows about Japanese swordsmithing as reference.