"My boyfriend's too busy with work to take me to the beach." Finding this complaint posted on m●xi, we drove across the Tokyo Bay Aqua-Line straight to To●yama Beach in Chiba Prefecture. The bikini girl in the photo is Mao-chan, a first-year university student and resident of Kisarazu City, who's also a member of her school's swimming team. Though this 18-year-old dreams of marrying her boyfriend Ryo one day, she enjoys her freedom when single and isn't opposed to casual fun. While she's generally loyal to one partner, when unattached, she's eager to play and will go anywhere for excitement. This time, after playing at the beach, she easily gets seduced. She bears no guilt—it's entirely the fault of her absent boyfriend, who failed to satisfy her desire for fun. Heading to the rest house for a shower after swimming feels perfectly natural. Cheerful and trusting, Mao-chan smiles and says, "I'm ready to go♪," clearly enjoying herself. Within minutes, she's cheating on her boyfriend, though innocence shields her from any sense of guilt. She offers weak resistance—"I can't, I have a boyfriend"—but quickly gives in, moaning helplessly. The sun's warmth has left her skin sensitive; every touch makes her twitch with arousal, and she begs with kisses, whispering, "I want it so bad." Any guilt over betraying her boyfriend? Virtually nonexistent (laughs). After shooting a larger-than-usual load, we reversed across the Aqua-Line, eager to turn this salty summer encounter into a memorable experience.