Tsubomi appears once again in "The First Penetration," helping out virgin guys with their first sexual experiences. This time, three shy and innocent virgins take part. Tsubomi's gentle guidance eases their tension and anxiety, patiently teaching them about sex with heartfelt kindness. Having Tsubomi as your first partner feels like a dream come true. Experience the warmth and intimacy of this special moment in the fourth installment of the dream viewer-participation project, a documentary on losing one's virginity.