User blog comment:Rei Furuya/Brother and sister reunited/@comment-36009152-20181117180750

Krul and Asuramaru, being vampire and demon respectively though they may feel they don’t have emotions, their visceral reactions suggest otherwise.

Now this is a real big unfortunately, but from a storytelling perspective, tragically it might not be good news for these two. Asuramaru may not be able to leave the weapon at all. Though he could interact with Krul if she could access the sword, Asuramaru would have to be counted on to not try and possess her. With his full demon side it would be a very clever ruse for him to feign remembering his beloved sister, only as an act, a means to an end of possessing and exerting leverage over a major prize such as Krul Tepes, one of the most powerful beings in the world herself.

The other alarm bell is that the author had a, well, not so happy ending for Guren and Mahiru. World story wise, everything’s going swimmingly with Mika and Yu - perfect, so other people close to each other can have the bad outcomes to explore those courses in the story from a technical point. Woefully the same may be applied to Krul and Asuramaru. They are both incredibly powerful, if Krul can’t get him back, heck she may even see him as a rival with their powers, and if Asuramaru’s only goal is possession then this doesn’t seem like a light at the end of the tunnel.

Though it will be fascinating to see it play out in the shadows so to speak, don’t think there would be any doubt Krul would remember him, and be happy for it but when it comes right down to it, it’s also a tornado meeting a volcano scenario. Since they're linked with Mika and Yu respectively it’s only a matter of time before they become fully aware of one another, and though it could be a tearful happy reunion, it could also be a power play with one massive dark unhappy outcome!