Story ideas for adoption/challenges (These Are Naturally Up For Adoption)

Male Gaim Reader x Monster High

First I'd like to introduce the readers history. (I'm basing the reader on my plans for college, except certain points, like I'm planning on 4th grade rather then 5th.
-2019: the reader graduates high school and goes to college at Butler Community college for two years then to Slippery Rock Community college for another two years for a degree in teaching math.

Marko is curious kid who prefers to do something with his hands, but doesnt have a real interest with sports.

Alexa is a quiet girl who prefers to keep to herself, despite that she isn't easily scared, infact she barely finds most scary things, well, scary.

-2021: while in college the reader only goes to one party, where he got drunk for the first time and had a night alone with a girl he was friends with who was transferring schools.

-2024: the reader graduates from Slippery Rock and gets his degree, soon becoming a 5th grade Math teacher.

-2032: its revealed that the girl the reader was friends with in college had been pregnant and had twins, a boy name Marko and a girl named Alexa, but recently she had died and the only family the kids had was their father, whom they never met. The Reader naturally adopts them as to save them from foster care.

-2032+2 months from last check point: the Reader and the children were moving into a new house, in the readers car was his important certificates and his small collection of Kamen Rider Gaim toys, which he had discovered in his Fathers house when he introduced his kids to his father, along with the children's few personal items. While the few months had let them bond, they weren't close as the children had apparently been to their mother.

Now onto the story part.
While driving down a surprisingly empty highway the car had begun to slow down, when the reader pulled over to check what was wrong a vortex opened underneath the car, allowing it to fall through, thankfully only about 12 feet, landing inside a room that appeared to be a office, which for some odd reason had a blue and purple horse and a woman with her head on a desk. The car suddenly falling into the room had spooked the horse and Dullahan woman, while also drawing the attention of a few people outside the room who had been called to the office, but of course the ones most terrified were the ones in the car, mainly the children, Alexa close to crying.

The ones outside the room bust the door open and see the car that had landed in the room, it breaking the floor from its fall. The five were a Cavadier(reanimated body, like Frankenstein's monster), a werewolf, a Vampire with pink skin, a Mummy, and a Zombie with glasses. They stared at the car in the office, taking a moment to register what they were looking at, a car with a visibly shaken adult human driver, and two clearly scared children in the back. The Cavadier went up to the car and knocked on the window slowly drawing the drivers attention as he was breathing in and out to calm himself, he drew down the window allowing the Cavadier to ask him if he was okay, the reader replied with,'I-I think so, just shaken up i-is all, Marko, Alexa, are you two okay back there'. The reader turned back towards the twins suddenly realizing that they might've been hurt. The both of them nodded while they simply looked at the monster arrivals out side their windows.

The Dullahan awoke from her sputter and shock as she went up to the car, putting her head on. She had asked what had just happened, to which the reader told her what had happened before they fell through the vortex, not actually knowing about it in the first place, simply saying their car suddenly fell down into the room. Before another question could be asked the reader opened his door and stepped out of the car before opening the kids doors and pulling them out, beginning to breath in and out while he apologized to his children, thinking that he nearly got them killed. Shortly after that the reader froze and turned towards the others in the room, just now realizing what they were, slowly of course, before asking, 'ah, I'm sorry, but, er, um, but, are you all, mythical monsters?'. All of them replied yes and introduced themselves, reassuring the Reader that they were no threat to him or the kids. Miss Bloodgood then asked that the ghouls take the Reader and the children to the gym while she got someone to get the car out of her office, but before that the children grabbed the box holding the Readers kamen rider Gaim collection so they had something to play with.

When they arrived in the gym, only three other people were there, Clawd wolf, Clawdeens brother and Draculaura's boyfriends, Deuces Gorgon, Cleo's boyfriend, and Heath Burns. The three came over when they noticed the ghouls with a normie and his kids, but the ghouls quickly explained the situation before anything happened. Alexa had pulled a Vehicle Lockseed from the box and was about to play with it when she noticed it didnt feel like plastic, but like metal. She toyed with it and opened the lock, shocking everyone when it suddenly jumped out of her hand, grew in size, and unfolded in the air into the Sakura Chaser. The reader was the first to react and went over to the bike, and found that it was not a hallucination, before going over to the box and checking the others 'toys', finding that all the weapon, figures, and arm changes were gone, only three Sengoku drivers, two genesis drivers, and tons of lockseeds, all of which felt like metal rather then plastic. As if on cue, a loud boom was heard followed by the found of panic. The group went towards the sound and found a green creature tearing up the halls. The Reader recognized it as a inves from Gaim, combine that with the fact the lockseeds and drivers are apparently real, and the reader thought of using a Sengoku driver. When he tried to grab one of them he was stopped by Clawdeen grabbing his arm, she had noticed the face of recognition on his face, along with the sudden determination on his face when he thought of using the Sengoku Driver. He broke her hold and slapped the Driver on his waist, the blank face plate glowing and becoming Gaim's. When he did this the Inves noticed him, and began charging towards the group, but thankfully Clawd and Clawdeen(who had decided to trust him despite the lack of knowledge of what's going on), tackled it, allowing the reader to grab the orange lockseed from the box. He then stopped for a second thinking over his choice, before thinking about his old self before college, always so imaginative and always daydreaming of being a kamen rider, and all the shows he'd watch and the ideas and messages they had, such as My Hero Academia and the idea of being a hero and self sacrifice, with that he unlocked the Lockseed, a zipper portal opening above him as the orange arms floated down, then he inserted the lockseed into the driver, locking it before shouting henshin and slicing the lockseed open, generating the armor and allowing the orange arms to land on him and unfold into the orange arms form of Gaim.

He then pulled out his swords and charged at the inves as it was about to crush Clawdeen, slashing it across the chest, throwing it away a couple of feet. And so the reader began fighting the Inves, eventually getting outside and switching to Strawberry arms. The fight soon ended as the chapter ended with the reader turning to the crowd that had gathered around the fight