Hiroki Yasumoto

Once the greatest hitman of all, Taro Sakamoto retired in the name of love. But when his past catches up, he must fight to protect his beloved family.

The distant future, 5012. The sudden aerial invasion of Earth by ＜Aliens＞ and their creations ＜Machine Lifeforms＞ led mankind to the brink of ...

After years of experiments, three researchers finally create Ninja-Gum. This substance awakens dormant power within people descended from ninjas, ...

Only 39 years into a life full of bad luck, Ryoma Takebayashi passes away in his sleep! Taking pity on him, three divine beings show compassion ...