Main character

Y/n L/n has always ans still is a fan of warships and shown to be very intelligent and plan things ahead of him and shown to be one of the most and kindness boy ever but one day change everything when we was ran over by a car when he try to save a child and was immediately killed in the progress. But instead of going to heaven he was suddenly transport to another world and was met by a Captain named "Captain Itachi Ono" and he asked Y/n to be their General in their fight against the sirens. Now his skills will be putting to the test when he has to be General of his Navy fleet of ships and assist them and many more I their fight against the Sirens ane other threats that Y/n will faced but he will protect the Seas as an General of his navy fleet.