Okita Souji Mizugi is portrayed as a poised, energetic figure stepping forward in a radiant swimsuit. The design highlights her flowing pale hair styled in twin tails, with a few strands loose to frame a determined face and a small, confident smile. Her swimwear features a deep navy base with white accents and delicate gold trim, sculpted to show the folds, shading, and highlights of fabric drape. The sculpt emphasizes toned limbs and a dynamic pose, with a subtly curved stance suggesting movement. The base imitates a sunlit pool deck with ripple details, while light reflections on the water surface add depth. Subtle skin tones, precise paint lines, and a glossy finish on the swimsuit enhance realism, creating a vibrant, summery display that still reads as faithful to her character.

Okita Souji is celebrated for her explosive swordsmanship and unwavering loyalty in Fate/Grand Order. In the game's stories she embodies a spirited, principled swordswoman who blends cheerful humor with unwavering resolve in battle. This Mizugi variant places her in a playful summer scenario that hints at her carefree side while keeping her iconic presence and discipline intact. Fans will recall her historical role in the Shinsengumi and her reputation for swift, precise strikes, as well as her enduring charm. The description invites collectors to imagine scenes of camaraderie, leadership, and quiet confidence, where Okita's blade remains ready even as the sun shines and waves sparkle.