Nagato probably knows this chart by heart...like her personal shopping list of destroyers.
SuspiciousAh, Ryuujou-san. This is...AyanamiMurasameKagerouEx-girlfriendHatsuyukiSuzukazeMochizukiHibikiA romantic relationships graph between all the destroyers!MiyukiCurrent girlfriendsCurrent girlfriendsLove triangleFubukiOh!?
Inazuma-chan, what are you writing with that serious face?ShirayukiThe great war of romance is starting in the destroyer fleet! ShiratsuyuArareOoshioYuudachirivalsYou won't be able to survive among the destroyers if you don't at least have this memorized by heart!