Disclaimer: Touhou and Familiar of Zero belong to their creators, I own nothing other than the plot

Louise coughed from the smoke generated from her summoning spell. Today have been the Springtime Summoning Ritual, and Louise had just attempted her summoning but the result have been like before, an explosion.

"Please let there be something", Louise thought to herself. Suddenly all the smoke of the surrounding area have been blown away, and from the summoning circle emerged –

"Well, this is different than where I was planning. Did I make a mistake while creating the bridge of effect?"

"I knew you were unreliable we should have used the Probability Space Hyper vessel!"

"Don't blame this on me, Okazaki! Usually I don't make mistakes in world hopping, besides you were the one who proposed the 'Magical Research/Vacation plan', you should be glad that I came and helped you in the first place."

"Okay, fine but we arrived at the wrong destination, this world better have magic or the plan is all ruined!"

What emerged from the smoke were two weirdly dressed girls that were bickering with words that were foreign to her. Louise quickly looked around and noticed that everyone was looking at the two girls that emerged, but the girls seemed too busy talking to each other to notice their surroundings.

"Excuse me," Professor Colbert said to the two girls. "Can I have your attention for a second!"

"Oh sorry about this, did we come in at a wrong time?" The red-haired girl with the red cloak, said with a confused look.

"Well you have just been summoned by Miss Vallière to be her familiar."

Louise quickly said to Professor Colbert, "Wait, Professor Colbert this is a mistake, please let me summon again!" She knows that there is no way these two girls can be impressive familiars, she boasted to Kirche that she would summon the most impressive familiar, something like a dragon or griffin.

"Miss Vallière this is a sacred ritual created by the founder, we can't do such a -"

"I refuse; I have more important things to do."

"Same here."

The two girls instantly replied before Colbert could even finish his sentence. But what surprised everyone is the way the two girls rejected it instantly.

"Haha, Louise got rejected by the two commoners she summoned." Someone in the back shouted.

Louise didn't bother replying to the insult and continued begging the professor. But before she could say another word the boy who shouted the insult before was suddenly blasted back ten meters by the red haired girl.

"That was rash Yumemi; you shouldn't attack someone like that."

"Be quiet Kanpukugu, the boy tossed the insult first so he should have been ready for the consequences."

Louise still couldn't react to the scene before her, but everyone else has already done so. All the students other than Kirche, Tabitha and a few ran away, while the remaining student and Professor Colbert readied their staff.

"Who are you guys, and why did you attack my student!"

The blonde girl, Kanpukugu, looked at the other red head girl, Yumemi, and said, "There you happy now, we're now being treated as enemies."

"Well, let's solve it the Gensokyo way then." Okazaki Yumemi, the Fantasy Legend, said as she draws out a card from her sleeves.

"Science Sign [Cross Bomb] - easy!"

After Yumemi declared those words, crosses suddenly erupted towards the students of the academy.

Professor Colbert ran towards the crosses and sends a fire spell towards the cross shaped attacks, he didn't know how dangerous these mages were but he has to protect his student. The resulting explosion caused dust to block everyone's view once again.

"Professor Colbert!" Louise shouted and she got her reply, a flame snake was sent towards Yumemi who quickly dodged it. It was her fault, she thought, she summoned them so she has to take responsibility, she is a Vallière!

Louise then drew her wand and pointed at Yumemi, but before she couldn't see Yumemi on the ground. Suddenly, a barrage of crosses came plunging through the sky, that was the last thing Louise remembered before she blacked out.

Author words:
Hi, this is my first fan fiction featuring touhou and familiar of zero. As a crossover fan fiction fan as well as a touhou fan, I decided to cross it with familiar of zero. The two summoned this time is Yumemi Okazaki and the fan-made character Otohime Kanpukugu. Of course they wouldn't want to be a familiar, they wouldn't destroy the setting (even though I'm using fanon touhou for this fanfic), but they would totally derail it. As for why they are here, let's just say its summer in Gensokyo and a lot of people have vacation plans outside of Gensokyo.