Genten (a Touhou LW original) refers to the northern sky, the winter sky, and the celestial bodies in the sky. It also refers to one of the four guardian gods, Genbu, the Black Tortoise, also known as the Black Warrior. Youmu is endowed with the temperament of an assassin (Metal Phase) and the temperament of a traveler (Star Essence). The cold and silent Metal Phase resists Earth Phase, because earth bears metal, but it is weak to Fire Phase, because fire refines metal. The diverse and uncooperative Star Essence resists the cooperative and indecisive Moon Essence, but it is weak to the charming and arrogant Sun Essence.

The ability of Youmu Konpaku (R8) from Memory Fragment 5 (a Touhou LW original). The path that this Youmu has walked is so unusual that it is still a mystery how exactly she differs from other Youmus. This Youmu is made up of four quarters. She has two half-human, half-phantom halves. In a world with a Hakugyoku Arena, Youmu fought to correct Yuyuko's distorted fate. However, just when all her efforts had failed and she was on the brink of giving up, another Youmu appeared before her... a Youmu dressed in black. They attempted to combine their fates. The details of this attempt can be found in another report, but, simply put, it was anything but easy. They had to forcibly transfer an ecumenical niche. It was like an organ transplant of fates. There was no guarantee of success, but Youmu was all out of options. This marked the beginning of their seemingly endless journey through repeated histories, which can only be described as a living hell. The following is an excerpt of a report left by two swordswomen that was recorded in a Dazzle. I'm not good at thinking things through. I don't even know if anyone has tried this before... or if this really is the only way I can achieve my goal. I don't know anything. WE don't know anything. That's why there is no right or wrong. We won the duel. Our opponent expired on the arena floor. No. Why am I trying to sugarcoat it? We stole everything. Their life, fortune, honor, future, hope... and even their fate. We stole everything and made it our own. We became them... just like we've done so many times before. Being the only ones left in the arena, we became them. We now had to live as them, act as them, and be seen as them. To transfer an ecumenical niche (whatever that is), we, my two selves, have to retrace the fate of this world. We don't understand why. That's just how it is, apparently. Each time we retrace fate, the niche will slowly be transferred. This may sound silly, but it's like we're both sitting on the same seat, slowly shifting over until one of us takes the whole seat. Only, this seat is perched precariously on top of a mountain. If we fail to change seats, if the seat falls, it will have all been for nothing. Compared to this delicate and dangerous juggling act, temporarily shifting to our opponent's seat is simple. But that doesn't mean we enjoy it. We don't want to steal. But to exist in an era where we do not belong, we have no choice but to steal and keep stealing. We have to keep moving forward, hopping from one precarious seat to the next. I keep saying "we," but really, I should be saying "I." There are two of me, but we hardly ever acknowledge each other. In fact, the only real interactions we've had were when we first met. Since then, we've acted as a single entity. It's not like I've got a dual personality or anything. It's not that complex. We see ourselves and the world through a window. And there are only so many windows as there are seats... Actually, now that I'm trying to explain it, it is complex. I don't really understand it. Anyway, it's "I," not "we." The thoughts, feelings, memories, and perceptions belonging to one of my selves are slowly being changed into the other's. Both my selves are me, but we're not identical. I know that. So, when these things change, I can tell that we are getting closer to changing seats. It makes me happy. However, in the end, we must say goodbye. One of my selves will become a pitch-black cherry tree, a wedge that will form a pact with this world. My other self will be stained black and fulfill the duty that remains. Everything I do is for Lady Yuyuko. But what helps her helps me. Now that I am alone in the arena, I steel myself for the next leg of my journey. I will only return here once I need to use the arena again... In other words, when I need to end someone suspected of being immortal. When I need to cut someone down. This place should be in the Netherworld, but for some reason, that I don't understand, it is here. I don't know how or why Lady Yuyuko exists here, either. I doubt I'll ever figure it out, not even if I live for a million years. Nevertheless, Hakugyokurou still exists as a home I can return to. And Lady Yuyuko continues to wait for me here. It's almost as if they're watching over our fate. No... Who am I kidding? I bet they're still here because I dragged them into this mess. "Youmuuuu? Did you finish your duel to the death? Dinner's ready." "Coming, Lady Yuyuko." Her voice put a stop to my wayward thoughts. There's no point in thinking about any of this. From the beginning, there has only been one thing that I must do, and that will not change until the very end. I cut. And I keep cutting. Today, once again, I cut away my doubts. [The report ends here.]