This is an AU to my other Godzilla/High School DXD story, it's been on my mind since watching Godzilla 2. In this story, Rias is engaged to the Prince of the Monsters instead of Riser. The reason why will be revealed in this chapter. The story is also a harem since it's DXD.

Harem: Rias, Akeno, Kuroka, Yasaka, Tiamat,

That's the harem for now. Let's begin, shall we?


"So this is Kuoh Academy?" Said Ryan Gojira, the son of Godzilla himself, as he stood outside the Japanese school in his human form as he couldn't exactly walk around as his Kaiju form, humanized or monster size. The reason he was here was to meet with his future wife, Rias Gremory of the Gremory family.

How did this happen? Well, during the Great War, a Kaiju by the name of King Ghidorah got involved and Ryan's father, Godzilla, also got involved to deal with his longtime enemy and rival for the Alpha Predator position. Ghidorah killed many Devils, Angels, and Fallen Angels to show his strength and power as he once again attempted to conquer Earth. But Godzilla battled Ghidorah and defeated him, Ghidorah had mysteriously disappeared and hasn't been seen since then.

The Great War came to a stalemate afterwards, and during the Devil Civil War, the Anti-Satan Faction issued an alliance between them and Godzilla. Godzilla agreed to help them but he wanted something in return: One of their children married to his own. He and his wife Blue were currently trying for a child at the time. So it was agreed, despite many not wanting to taint the Pure bloodline but they didn't want Godzilla's legendary wrath come upon them during this war.

So after the war, Zeoticus Gremory found out he and his wife were having a daughter, so he offered a marriage between his daughter and Godzilla's son. The King of the Monsters agreed and so the marriage between Rias and Ryan was made and finalized. The two knew they were getting married to each other but hadn't exactly met the other yet.

It was expected to happen since Ryan assisted his dad in fighting Kaiju like Battra, Orga, Megalon, Gigan, you get the picture.

Walking past the gates, Ryan sniffed the air and groaned in disgust as he could smell the lust radiating off the boys here. He did hear that this school was all female before turning co-ed and now lustful, teenage boys with raging hormones were around. Joy. Though, Ryan couldn't exactly speak, his primal and Kaiju side acts up when it wants a female to mate with.

He stopped when he heard gasps of disbelief and turned to see his future wife...Rias Gremory.

"Wow, she's more beautiful in person than in a picture." Ryan thought as he stared at his future wife, his Kaiju side slightly stirring at it felt the presence of it's future mate and already Ryan could feel the small urge to take her now.

Rias was a beautiful young woman with white skin, blue-green eyes, inherited from her father, Zeoticus, and a buxom figure. Her most distinctive feature is her long, beautiful crimson hair which she also inherited from her father, that reaches down to her thighs with a single hair strand (known in Japan as ahoge) sticking out from the top. Her hair also has loose bangs covering her forehead and side bangs framing her face. Her current outfit was the Kuoh Academy girls' school uniform, which consists of a white long-sleeved, button-down shirt, with a black ribbon on her shirt collar worn under a black shoulder cape and a matching button-down corset, a magenta skirt with white accents, and brown dress shoes over white crew-length socks.

To put it bluntly, she was gorgeous!

As if feeling his eyes on her, she turned her head and locked eyes with him. Her eyes narrowed a little before widening in recognition. They had only seen photos of each other so of course they'd recognise the other from that. Rias broke the gaze first and entered the school with the confused boy beside her.

Shaking his head, Ryan also entered the school and saw that boy who was with Rias getting grilled out by his two friends as Rias walked towards some stairs. Ryan sighed and pinched the bridge of his nose.

"I better not regret agreeing to come here." Ryan thought to himself with a sigh.


Nearby, Rias stood with her childhood friend, Sona Sitri, looking down at Issei and his friends. They had just spoke about him when Sona turned her gaze to Ryan ad narrowed them as he gave Issei and his friends an annoyed look before walking away. "So, that's your future husband."

Rias followed her gaze and nodded. "Yes. That's the son of Godzilla himself. It was hard to believe that I would be getting married to him. The Princess of the Gremory family and the Prince of the Monsters." Rias snorted in amusement. "It's like a romance story."

Sona smirked a little. "It'll be Interesting with him around. Perhaps he'll allow you to go to Monster Island as no being aside from humans have ever went to that island."

"With Godzilla ruling it, I don't blame them." Rias said, she had heard the stories about Godzilla, him battling a three-headed dragon during the Great War, his legendary wrath and rage that has been infamous since 1954. "Still, his second name will get a few looks. Someone being named after Godzilla might not be seen as a good thing."

"That's their opinion." Sona said as Ryan disappeared around the corner. "Still..." She gave Rias a smirk. "I wonder what your child will be like when you have one."

Rias blushed. "Shut up."


The rest of the day passed and it was now lunch time. Ryan sat by himself at a table, eating some fish that his mother caught for him. He was part Godzilla and part dragon. His mother was called Blue, a dragon goddess who could control elemental powers like fire, water, Lightning, Ryan inherited that ability along with draconic wings hidden inside his back.

"Excuse me." He heard a voice say and looked to see Rias Gremory herself sitting across from him, a smile on her face. "I figured it was about time we meet each other."

Ryan shrugged. "Maybe. So what's up?"

"Come with me." Rias said, standing up and waiting for him to finish up. Once he was done, Ryan followed her out of the cafeteria, sending a glare to the students whispering inappropriate things about him and Rias, especially the guys. "So, enjoying your first day?"

"A little." Ryan said, looking around. "But I'd much rather prefer kicking Kaiju ass than being in a school, but our parents wanted us to meet so it seems."

"Well, we only have seen pictures of each other. So we obviously had to meet in person." Rias said with a smile, glancing at him. "Is it true you can shift into your Kaiju form while remaining the size of a human?"

"Yep." Ryan nodded.

"Nice. I'll be honest, I would have taken this agreement in a heartbeat than the original one." Rias said, getting a confused look from Ryan. "Originally I was to be engaged to Riser Phenex of the Phenex clan. But he's such a womanizer and only lusts for my body."

Ryan growled. "I hate those kind of people. No respect for a woman and her choices."

Rias smiled at that as they approached and old building. "So, how do you want this to go?"

Ryan looked at her. "What? The marriage?" Rias nodded. "I was gonna ask you that."

Rias smiled at him again and thought it over. "How about we wait until we leave school and get married immediately after? It would give us time to get to know each other better." She then smirked seductively. "Though that doesn't mean something sexy won't happen between us."

Ryan smirks a little, he had heard that Rias likes to tease. Though he did agree with her on the last bit...as long as his mom doesn't grill him for sleeping with Rias before marriage and getting her pregnant. That would be a very weird situation. The engaged couple entered the old school building and soon came to a set of doors that Rias opened and said.

"Welcome to the Occult Research Clubroom."


That's it for this chapter. Hope you liked it. The next one will be showing Issei getting told about the supernatural. So this is basically starting in episode 2.

Also, I need ideas for the harem as long as there are good enough reasons. I don't just want names, I want reasons on why these women should be in the harem.

Also also, I have another DXD story that was inspired by Infinity DXD but is completely different. I just need to think up a title before posting it.