MIMU-001 - My sisters who mocked my 'small penis' go on a hot spring trip, only to lose control when they see it in the mixed bath!

The debut of MOODYZ's new label 'MUTTURI'! A hot spring trip with four beautiful sisters who usually treat me like dirt. But when they see my 500% erect penis in the mixed-gender hot spring, their 'erotic switch' turns on instantly. They go from mocking me to swarming me, desperate for a taste. Can I really handle all four of them?