Do S na Seitokaichou-sama ga M Note ni Shihai Saremashita. – Episode 4 (EN)

Episode 4: ～ドMに与する憧憬 do S～ / The Queen’s Fall and Final Service

Shino gains the upper hand, making Maina feel threatened for the first time. The once-perfect president starts making mistakes and desperately tries to win back Sota’s attention with humiliating dogeza service and frantic riding. Shino calmly continues her gentle yet overwhelming devotion. In the end, the ultimate service battle reaches a creamy, white-hot climax as both girls pour everything into satisfying their master.