Yuudachi in Mizugi Mode Kai Ni stands poised with a confident stance that blends playful charm and naval readiness. She wears a navy-blue mizugi swimsuit trimmed in white, with subtle gold accents on the belt and a small anchor motif near the hip. Her short, dark blue hair is tied with pale blue ribbons that flutter as if moving with the wind, and her expression mixes determination with a hint of mischief. The sculpt highlights the curves of the figure, with detailed shading on the skin, the fabric, and the accessories, capturing the sense of wind, spray, and sun on a summer day. The pose suggests motion, as if she has just stepped onto a deck, ready to spring into action, and the included base and display elements provide context and balance to the dynamic presentation of this Kai Ni upgrade.

Yuudachi is one of Kantai Collection's cheerful, swift destroyer girls who serves alongside her sister ship and fleet mates in the ongoing naval battles of the game. In this Kai Ni upgrade, she gains a refined silhouette and enhanced details, reflecting her growth in service and experience. The Mizugi Mode version offers a lighthearted look that contrasts her battlefield readiness with a carefree summer outfit, while still hinting at her dependable nature and loyalty to her fleet. She moves with a quick, nimble energy, poised to dash into danger or lend a helping hand. Her backstory emphasizes camaraderie, precision, and the quiet courage hidden beneath a bright smile, echoing the duality of her character in calm waters and in combat.