On an aircraft carrier steaming towards Japan:

In the bridge there sat 4 teenagers. They were sitting there discussing what they were going to do for the upcoming tankery tournament. "so" said Hans "Off to Kuromorimine we go."
"Yeah can you imagine it being surrounded by all of those girls," Stephan said with a perverted grin on his face.
"Stop being so perverted you moron" exclaimed Eric "If we misbehave at the school we will be sent back immediately." That shut him up quickly.
"I wonder how they will find our tank that we're bringing" monotoned Fredrick.
"Hell year can you imagine the looks on their faces when we show that to them" the others laughed.
"anyway boys it's time to get some shut eye as the captain says that we will get there sometime tomorrow." said Hans after they had calmed down.
"Yes commandant," replied the other boys

Meanwhile at Kuromorimine student council office:

"So, this is the arrangement the board decided on?" Maho said curiously to a German man dressed in a naval officer's uniform.

"Yes." The naval officer replied in perfect Japanese. "After the introduction to tankery, it has become quite popular in Germany."

Maho tilted her head to one side. The man continued, "When we learned that our school's situation was quite similar to your own (after their defeat by Ooarai, Kuromorimine had started to lose students making it have a similar situation to Ooarai) , we sent word to your board with a proposition."

"And the proposition was to allow for the merging of our school and yours?" Maho said curiously.

"Precisely." The man replied.

"Then this means!?" Koume Akaboshi said piping up. "It means boys will be allowed into Kuromorimine!" Erika exclaimed.

"Yes, as our school was co-ed, it means that Kuromorimine will become co-ed as well. The students are mostly German as you may have guessed, but do not worry, because they have all been required to learn the Japanese language and customs so there need not be any changes to any lifestyles you already have." The German assured them. "Don't worry, they will be here by the end of the week, for your information."
"I can see we have no choice but to accept your proposal."
"But Maho..." began Erika.
"No Erika that's enough" spoke Maho in a stern and calm tone.
Erika said nothing.