――Hoshiai
A festival celebrated on the Tanabata of the old Japanese calender in Hoshikago, the town our protagonist, [hl-yellow]Sachikazu Katori[/hl-yellow], lives in.
On an early summer's day, Sachikazu and his childhood friend, [hl-berry]Watanuki Tsuyuri[/hl-berry], bring some handmade Japanese sweets as offerings to a shrine on some rocks by the beach.
There, they come across a mysterious round creature, [hl-black]Manjuu-sama[/hl-black].
Tackled by Manjuu-sama, Tsuyuri's face slowly becomes red and her breathing gets more hurried... And she instead pushes down Sachikazu, who was trying to help her.
Tsuyuri's face at that time was nothing short of being [hl-pink]"in heat"[/hl-pink].
Tsuyuri returns to her senses after having bathed in Sachikazu's semen.
Appearing in front of these two is a girl in Miko clothing identifying herself as [hl-violet]Kusaka Hozumi[/hl-violet].
Hozumi announces:
Today, I have come to oversee the Hoshiai Ritual that shall be performed in view of Manjuu-sama's awakening."
The only thing that can calm down girls with sexual urges stimulated by Manjuu-sama's mysterious tactics is...
Sachikazu's semen!
With Sachikazu's sister [hl-darkblue]Katori Rin[/hl-darkblue] and [hl-green]Anastesia Lawes[/hl-green], a transfer student from England, also getting invovled, a festival of love revolving around Hoshiai begins!