''The main gun of the improved Kongou-class, especially refurbished and improved for the remodel of "Haruna", it is a “what if” improved and strengthened late model of a 35.6cm.<br>It incorporates a high-precision rangefinder to improve shooting speed, following various battle lessons, and can also be coupled with various radars.<br>The operability in naval combat, including night battles, has been greatly improved.<br>It will demonstrate its true value even more when [[Improvement|upgraded]] and used on "Haruna Kai Ni C", which specializes in naval combat!