(Note):"You can be a shipgirl of your choice, OC also will work "

It was just a normal day, until you heard sirens going off at the port...and then commander announcing something

"Listen carefully!, there's a Virus that makes shipgirls go crazy! All of you stay in your dorms, and lock all doors! I repeat! Stay in your dorms, And lock all doors and windows! Don't let them in!"

..sirens stopped and it was dead silent...probably some shipgirl's already got infected...((Infected ones will try to get to you! So be careful))..