Again, I have not heard or read about any Japanese cruisers ever capsizing, though the torpedo boat 'Tomozuru' did, and because of this, one of the primary Japanese warship designers (Admiral Fujimoto) was sacked, and many Japanese heavy cruisers were modified by the addition of hull bulges to improve stability (and of course, the 'Mogami' class had to be almost entirely re-built because of bad welding). The big problem was not so much the original designs, but the General Staff kept insisting on additions in weaponry that overloaded the heavy cruiser designs. The addition of hull bulges solved this problem, though it did slow the ships down by a knot or two (these were extremely fast ships in their day, with top speeds approaching 35 Knots!). I have not heard of the same complaint regarding Japanese light cruisers regarding stability, and they were never bulged.
Where Japanese light cruisers fell short was in armament and armor, but that was because these ships were not envisioned to fight as warships like those in the West, but to act as leaders of destroyer flotillas (basically, 'super destroyers' of a size sufficient to carry the additional command staff needed to direct a flotilla of destroyers). To the best of my knowledge, the only Japanese light cruisers that had much of a chance as a warship 'standing in the line' with heavier ships were the modified 'Oi' and 'Kitakami,' which were rearmed with some 40 'long-Lance' torpedo tubes (and never was such a ship more needed than in the Guadalcanal campaign, but instead, these ships were kept in Indian waters the whole time!!)....