After work every day, Manabu visits Kyoko's house. Lately, he's been so tired that after taking a bath, he lazes around and ends up falling asleep like that. The next morning, when Kyoko wakes up, Manabu is cheerfully active behind her as usual. Having fallen asleep too quickly the previous night, Kyoko feels a bit pent-up and unsatisfied. Mischievous thoughts fill her mind, leading things toward a new development.