Konatsu and Mikan belong to a tea ceremony club on the verge of being disbanded. There are only two members. The strategy they came up with was to open a cat ear café at the cultural festival. While serving matcha and matcha latte, they would use cute cat hospitality to appeal to the charm of the tea ceremony club. To overcome the crisis of "If we don't get new members by this year's cultural festival, the tea ceremony club will be gone...", the two put on cat ears and take on the challenge.
"I'll become a cat, nya~" "Fluffy boobs, nya~" "Cat cleavage, nya~" "So cute, nyaa~" – Hearing these voices, a male student comes to the shop. "It's matcha, nya~" "As it is, it might be too bitter for a kid, nya~" says Konatsu, and the male student asks, "Um... do you have matcha latte?" "We're out of milk, nya~" answers Mikan. Still, "I'll try drinking it... It's bitter... It's bitter," the male student says as he drinks the matcha. "Too early for a brat, nya~" laughs Konatsu. Then Mikan suggests, "Let's make it milder, nya~" and says, "That's it! Let's bring out the white stuff and mix it in, nya~" "White stuff?" the male student asks back. "The only white stuff is that, nya~" "We two will give it to you, nya~" "Special, nya~" – And so, to protect the tea ceremony club on the verge of disbandment, a cat ear sex café opens at the cultural festival. The youthful harem experience of the double big-breasted tea ceremony club members Konatsu & Mikan (18 years old) begins.