A fictional upgrade of the destroyer main battery that was carried by the Yūgumo-class destroyers among others.<br>
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A what-if upgrade of the destroyer main gun that was mounted on the Yuugumo-class destroyers.<br>
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Its maximum elevation is set particularly high, but because the basic structure of its reloading system stays the same its anti-air capabilities are limited. <br>However, thanks to the modifications that took various engagements into account it shall exhibit its excellent shelling power when used by Type-A as well as Type-C destroyers.
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It has a much higher maximum elevation but because the loading system is more or less the same, it's anti-air capabilities are limited.<br>However, thanks to the improvements made by incorporating lessons learned in live combat, it will display excellent shelling power when equipped on Type-A and Type-C destroyers.