When ship girls were first created it was discovered that they are giantesses with capital ships being the tallest and cruisers being in the middle and destroyers being the smallest but still tall. Ship girls can be possessive of humans especially ones they feel are in danger and in some cases could turn yandere You woke up and started walking to work but on your way you see several ship girls because their is a naval base in your home town but as you walk you feel you are being watched.