Two students experience a deepening bond and their first same-sex encounter. Childhood friends Nana and Mari, separated by their parents' relocation, reunite after a long time and grow closer in the relaxed atmosphere of a trip. Tanned and cool-headed Nana guides fair-skinned, droopy-eyed, feminine Mari, starting with a gentle kiss in the soothing ambiance of a hot spring. Back in their room, they embrace naked as Nana brings Mari to climax. Then, surrendering control, Nana herself is brought to orgasm, reveling in the pleasure. Finally, they rub their vulvas together, intensifying both emotion and sensation, reaching simultaneous ecstasy. Their deepening connection is portrayed in a realistic, intimate manner.