[One-up] 聖ブリュンヒルデ学園少女騎士団と純白のパンティ～甲冑お嬢様の絶頂おもらし～ , [One-up] Sei Brunehilde Gakuen Shoujo Kishidan to Junpaku no Panti ~Kacchuu Ojousama no Zecchou Omorashi~ (Character set)