[MUH-018] Everything is new to me. The second-year jinx that I couldn't overcome, the various things about my husband that I didn't know until we got married and lived together, and the mother-in-law issues that were more stressful than I imagined. Today, I want to let loose and relax... Mahiro, the pure wife, makes her AV debut with her first extramarital affair, cumming in with another man's semen.