WARNING: There are spoilers to Doctor Who Series 9 in the Fact File at the end of this chapter. Make sure you have watched Series 9 FULLY before you continue reading.

Ashildr led Natsuki and the Hidamari girls to the back of the restaurant, where another TARDIS was waiting. Clara was inside the TARDIS. When she saw Natsuki, she greeted him with their secret handshake. Apparently, Natsuki had met Clara on previous adventures with the Doctor.

Natsuki asked Clara, "So, why didn't you come in to get us?"

"There were a lot of people inside and outside. I didn't want to raise attention, so I sent her in to get you."

Natsuki turned to Ashildr. "Sorry, I haven't asked for your name."

"Me."

"Yes, you. What's your name?"

"That's my name. Me."

Clara interjected, "She calls herself that, but her name's actually Ashildr. She won't mind if you call her that, won't you?"

Ashildr nodded. "Anyway, there's a reason why I had to get you. There's something about the Hybrid prophecy that didn't seem right. We accidentally landed on Koshi Castle during one of our travels and Clara seemed to recognise someone. Clara, show him the photo."

When Clara showed Natsuki the photo on her phone, Natsuki said, "But… that's…"

Clara nodded. "That's your older brother, Simon Wong. I'm afraid he died at the hands of Girl Power at Koshi Castle."

"What does that have to do with the Hybrid?"

"That's what we're trying to investigate. We want to know what Girl Power did to your brother so that the Doctor can know about it." Clara turned to the Landlady and the Hidamari girls. "Sorry, girls, but I need to speak to Natsuki in private. I'll drop you off nearby."

The TARDIS materialised on Roald Dahl Plass in Cardiff. "If you can't get home from here, call me again and I'll come back to pick you up," Natsuki said to the girls.

When Miyako heard this, she held on to Natsuki's arm and said, "I don't want to leave you, Natsuki. I want to see the stars for real!"

Natsuki chuckled. "Don't you see them enough from the backyard?"

"I know, but what if there were stars all around me? What if there was no ground below me, and it was all stars? I've always wanted to see what it would be like!"

"Alright, you can come with us. We'll take you up to space as soon as we finish what we have to do," Natsuki said with a sigh.

Yuno added, "I want to go too! I can't leave Miya-chan alone if you're taking her to strange places!"

Clara and Ashildr let Yuno and Miyako travel with Natsuki as they investigated the Hybrid. Hiro, Sae, the Landlady and the others said their goodbyes and left the TARDIS and watched in curiosity as the American diner disappeared from plain view.

Back inside, Natsuki asked Clara, "So, what do you know of the Hybrid? I heard a bit from the Doctor back at the restaurant, but I thought you two would know a bit more about it."

Ashildr said, "The legends state that the Hybrid is a creature, half-Time Lord, half-Dalek. According to what we saw in Koshi Castle, your brother was forced together with a half-Dalek human named Kelly Tang. Okay, she's not half-Dalek, but she's similar, what was it again, Clara?"

"Kelly is half-human, half-Kaled. The Kaleds are the ancestors of the Daleks. Davros is a Kaled, and I have reason to believe that there was another one at Koshi Castle. Anyway, Natsuki, I saw you somewhere inside Koshi Castle and you never told me a thing about it."

Scratching his head, Natsuki replied, "No, I don't seem to remember Koshi Castle. Doesn't ring a bell to me."

"What would Simon and Kelly have that the Daleks also want for themselves?" Clara replied.

"If I remember correctly, Simon had a crush on Kelly when he was in high school. Kelly never returned his love because she didn't like him back. I don't know what happened, but eventually, they started dating, then they broke up a couple of years ago."

Ashildr had a list of people written down on a sheet of paper. "We're going to visit these people. They might know something about the Hybrid, but if you've said that you've forgotten, I wouldn't be surprised if they've forgotten too."

Fact File: Hybrid Theories (SPOILER WARNING)

Throughout Series 9 of Doctor Who, numerous mentions have been made to the Hybrid. However, this is a question that is still left unanswered. In my opinion, the theories that were made on the show conflicted with each other.

Davros states that the Hybrid would be crossbred from two warrior races, namely the Daleks and Time Lords. Davros also attempted to steal the Doctor's regeneration energy in order to make his Daleks into Time Lord hybrids. However, the Doctor later states that the Daleks would never allow anything to be "half-Dalek".

Ashildr/Me was resurrected thanks to a Mire medical kit. Therefore, she states herself as being "human, with a little bit of Mire inside". Humans and the Mire are also known as warrior races, so Ashildr/Me could be the Hybrid. She is also shown to be inside a reality bubble among the ruins of the Cloisters on Gallifrey. Therefore, she is shown to have conquered Gallifrey and stood in its ruins.

Sam Swift the Quick was also resurrected using the other Mire medical kit, but since Ashildr stated that "even the other immortals are gone," Sam Swift was assumed to have died.

The two Osgoods shown in The Zygon Invasion/Inversion would state themselves as being human and Zygon, without revealing their true species. The Doctor notes this as being "like a hybrid".

The Doctor later states that the Hybrid "is me". It is uncertain if he is referring to the Doctor himself or Ashildr/Me. However, when the Doctor confronts Ashildr/Me with the theory that she is the Hybrid, Ashildr/Me theorises that the Hybrid is not one person, but two: "A dangerous combination of a passionate and powerful Time Lord and a young woman so very similar to him." This refers to the Doctor and Clara.

In this story, there are two Hybrids. One is Hiroki (formerly Simon Wong), who is a human-Time Lord hybrid thanks to Rassilon's Mako energy formula. As a result of this, Hiroki is a high-functioning autistic. There are other human-Time-Lord hybrids created as a result of Rassilon's formula, but Hiroki is the one that we will focus on in the story.

The other hybrid is Kelly Tang. She is technically a human-Kaled hybrid, not a human-Dalek hybrid because, remember, the Daleks would never allow anything to be "half-Dalek". The girl who came into the diner in Chapter 6 states that they had Kelly seduce Hiroki so that her comrades could kill him. As a result, the couple was human, Time Lord and Dalek (Kaled). Therefore, Hiroki and Kelly fit the prophecy describing the Hybrid – half-Time Lord and half-Dalek while not being half-Dalek.

If I were to tell you anymore, I would be spoiling my own story, and I don't want to do that. I will revisit this theory towards the end of the story.