A younger brother who suddenly decided to take a bath together at the suggestion of his sister. What's more, the bathtub isn't just hot water ... there's a slimy lotion! My sister's tension is MAX in the lotion bath I took for the first time! Escalate painting, close contact and lotion play! And my sister who was feeling comfortable before I knew it leaked! Finally, he seeks his younger brother Ji Po and crosses the forbidden line! !!