Height
100.35 cm
Hotarumaru was owned by Korezumi Aso, the head of the Aso family from the early Nanbokucho period (1334~1392). After a battle where the sword was badly damaged from Korezumi's mowing movements, Korezumi rested at the foot of Mt. Aso, falling asleep out of exhaustion. He had a strange dream where a swarm of fireflies (hotaru) gathered onto his sword, making it glow. The next morning, much to his confusion, the sword appeared to be fully repaired. The sword, later named “Hotarumaru”, was kept in the Aso shrine as a family treasure. Although it was one of the nation's valuable treasures, Hotarumaru went missing after World War II during a sword hunt by the occupying forces. There’s a rumor that the sword is being kept privately in Japan, but it’s most likely destroyed. Crowd funding project started in November 2015, it required 5.5 million yen. The project ended up with around 45 million yen. In 2016, a crowdfunding campaign successfully funded the forging of Hotarumaru's replica using historical documentation of the original. The blade has been unveiled at Aso shrine on 18 June 2017. Photos of the forging process can be found on the project webpage.

Katsugeki/Touken Ranbu
The year is 1863 as the tumultuous samurai era is coming to an end, Japan is split between the pro-shogunate and anti-shogunate factions. The fate of the world is threatened as an army of historical revisionists are sent from the future to alter the course of history. In order to bring these forces down and protect the real history, two sword warriors, spirits who are swords brought to life by Saniwa (sage), rush to Edo. The polite and thoughtful Horikawa Kunihiro and the short tempered yet skillful Izuminokami Kanesada, who served the same master, confront the invading army along with a lively gang of other warriors including Mutsunokami Yoshiyuki, Yagen Toushirou, Tombokiri, and Tsurumaru Kuninaga. As the fate of history lies in these hero's hands, what meets the blade is yet to be uncovered...