That would be after the invasion of Makassar in Indonesia, Febuary 1942.
Sample pages. The book will be sold in Osaka's KanColle event. Seems like this one will tell story about why Ataru's Kuroshio always have that dark feeling around her like she's going to go crazy any time (or has been pretending she's not all the time).
Oh, so that was Natsushio. Natsushio was torpedoed by USS S-37 (SS-142), Kurushio attempted to tow Natsushio but the destroyer was already beyond saving, then Kurushio rescued survivors from Natsushio instead including CO. Nagai.
Natsushio was the first destroyer to fall victim to a USN submarine.