Yokodera Youto is always thinking about his carnal desires, but no one acknowledges him as a pervert. He learns about a cat statue that supposedly grants wishes. The boy goes to pray that he will be able to express his lustful thoughts whenever and wherever he wants. At the statue, Youto encounters Tsutsukakushi Tsukiko, a girl from his high school with her own wish—that she would not display her real intentions so readily.
As Yōto takes Tsukiko to an animal café to discuss their next move, they coincidentally discover that Azusa is working part-time as a maid. They intend to approach Azusa following her shift, but are forced to flee when they are reprimanded by a janitor for taking shelter from the rain near a love hotel. However, they soon find her working at yet another part-time job, later discovering she lives alone in an apartment. After Yōto confronts Azusa about this, he asks her on a date to get her away f
After failing to get Azusa to talk to him, Yōto confronts her former classmates over what happened. They had apparently teased her at her old school due to skipping it a lot, telling her their class was going on a field trip somewhere when they were actually going elsewhere, which led to her becoming distrustful of others. After hearing this, Yōto takes Azusa to the stony cat, telling her about his facade that she acquired and stating his sincere wish to become her true friend. After coming to u
Tsukiko explains that she felt her clingy behaviour drove Tsukushi away from her, which led to her making the wish on the stony cat. As Yōto tries to ask Tsukushi about this, it is revealed that she was the one who made the stony cat as a way of apology to Tsukiko following an argument. The next day, Tsukiko asks Yōto to help her shop for costumes for her performances with the children. Later that night, Yōto encounters Tsukushi, who states that she wants to get rid of her sisterly bonds with Ts
As Yōto asks for Tsukiko's help in determining the whereabouts of his house, Azusa becomes frustrated, having gone with Morii and Moyama to Okinawa expecting Yōto to show up as well, when he had just arranged it so they can make up. With rain settling in, Tsukiko invites Yōto to stay the night, which leads to various awkward situations when Tsukushi comes home as he comes out of the bath. Whilst attempting to break free from a sleeping Tsukushi's grasp later that night, Yōto hears her sleeptalki
On the last day of summer, Tsukiko found Yōto in there storage room sleeping. Yōto explain that storage room has everything found in his house and the only theory he has is that the strange cat-statue has to do something with it. On the next day Yōto asked Tsukushi about the cat-statue and it turned out that is is a god which their family worshiped and she also asked Yōto a favor to trick his "twin brother" to somewhere alone and kill him but Yōto said that Tsukiko would be sad so she must first
As the typhoon continues to grow worse, the house begins to flood and the discovery of a hidden room freaks out Tsukiko. Yoto starts to notice some weird anomalies suggesting this storm might not be caused by just Mother Nature.
It was a wonderful morning the Yokodera and Tsukiko went to school together while discussing their plans later than day for the school festival then suddenly a pink-haired little girl showed up, then it accrued that she was Ponta's little sister named Emi. Emi kept calling Yokodera onii-san (big brother) and seemed very friendly with him but at the same time Tsukiko seemed not to like Emi very much and had a feeling that she is a evil-plotted person,then she said that Yokodera should take Emi fo
On his way to school while still being bothered by Emi's wishes and existence and Tsukiko's cold behavior towards him, Yōto is informed by Ponta about his rabbit gone missing whilst realizing that Emi's wish of being Ponta's younger sister has been cancelled. At school, Yōto makes up with Azusa as the latter agrees on helping him locate Ponta's missing rabbit. Emi later cancels a wish of having the girls in their school wear swimsuits after she had her swimming match with Tsukiko as she recalls
As Yōto's cancellation of his wish only took a partial effect at his school along with the cat statue's sudden disappearance, Azusa became madly in love with Yōto, much to Mai's nuisance. Checking up on Tsukushi, Tsukushi prompts both Yōto and Mai to make amends before she leaves for Italy but fails. Later, Yōto founds Tsukiko lamenting in his room as she hides inside Yōto's dakimakura but was later found out by Yōto himself. Tsukiko later leaves Yōto's room after knowing that Yōto has met Emi l
Tsukiko, who along with Yōto, has been brought back ten years in the past by the cat god. As they head to the Tsutsukakushi mansion, along the way they met the younger Ponta, Mai, Azusa, and eventually Yōto, much to Tsukiko's amazement. Shortly thereafter, they meet Tsukiko's mother, Tsukasa, who is brash yet somehow soft towards the younger Yōto, who at the same time badmouths him. Through the younger Yōto, Yōto and Tsukiko were invited for dinner at Tsukasa's mansion, which is at slight disarr
While a sick Tsukasa is being treated by the younger Yōto, the young Tsukushi, along with Tsukiko, agrees to visit their mother once again after Yōto persuades them. At the mansion, the young Tsukushi and Tsukiko wear the clothes their mother made by hand. Knowing that their mother loved them, the young Tsukushi laments over wanting to have memories with her mother. The younger Yōto reprimands Tsukushi, but nonetheless, gives her his precious memories with Tsukasa for their sake by wishing to th