Kazushi Sudou is a university student who is visited by his two childhood friends, the sisters Ayane and Kotone Shirakawa. When Ayane discovers that Kazushi not only forgot to buy her pudding but is also using her special lotion in the bath, she decides to take revenge and join Kazushi in his bath along with Kotone. Will the perverted Kazushi be able to remain indifferent to them both?
Where to Watch
Streaming, rent and purchase options
Episodes
1. Soft Sisters and Bathing
Kazushi, a university student living alone, is troubled by the presence of two childhood friends, sisters, who hang out all the time at his apartment. The cheeky older sister, Ayane, and the laid-back younger sister, Kotone. With the two always around, Kazushi has been semi-forced into a life of abstinence for a long time... One day, a trivial argument leads Kazushi to take a bath with the sisters in the apartment's tiny bathroom. Even though he is still wearing his swimsuit, the soft touch of them clinging to his body makes Kazushi's reason waver.
2. The Dreaming Girl Next to Me
That night after their secret affair in the bathroom, Kazushi is unable to sleep due to excitement and feelings of guilt. While Kazushi is like that, Kotone and Ayane are sleeping soundly in a row as usual. Inspired by the glimpse of her bare legs peeking out from under the covers, Kazushi starts to touch Kotone's body again as they sleep together, thinking that she forgave him once. However, the person he thought was Kotone and put his hands on was actually Ayane.
3. Drawing Closer to Two Hearts
The day after a depraved night with his sisters, Kazushi is walking along, reflecting on the events of the previous night, when Ayane, with whom he now has the most awkward relationship, appears before him. When Kazushi apologizes cordially in front of his apartment, Ayane surprisingly doesn't seem angry. On the contrary, the moment she enters his room, she asks him with tearful eyes, "If you want to continue what happened yesterday... give me a kiss..."
4. Hot, Bothered, and Out of Control
No description available for this episode.
5. Hiding Together, Hearts Racing
"Huh... you were lonely without me...?" Ayane and Kazushi are finally alone at the sports festival, where they go to cheer on their sisters, and the atmosphere is good...! But then Ayane's classmates enter the girls' locker room while they're having a secret rendezvous!? In a panic, Kazushi and Ayane take refuge in the narrow locker room to avoid being seen. They spend several minutes pressed together, holding their breath. Kazushi loses himself in the warmth and heartbeat of Ayane, and the sweet scent of sweat mixed with her...
6. Pouring My Heart Out to You
"Because you're like family to me... I can always be by my big brother's side," Kotone mutters sadly as she steals Kazushi's lips. As the sports festival draws to a close, Kazushi learns the girl's true feelings in an empty classroom bathed in the sunset. "I don't mind being second... just look at me for now," Kotone says as she tries her best to convey the words, grabbing Kazushi's hand and making him touch her chest. With his heart beating painfully fast, Kazushi comes to a conclusion...
7. The Apron Seduction
Kazushi and the Shirakawa sisters decide to go to the pool on the substitute day off for the sports festival. Ayane, who has been tasked with preparing the lunch boxes, finds herself standing in Kazushi's kitchen wearing only a nude apron for some reason. "I heard from a friend that this is the best way to seduce a guy..." As she blushes and shakes her buttocks while they're alone in their apartment, Kazushi can't help but feel a sense of relief. He slowly approaches her from behind...
8. Forever Crazy About Two Sisters
"My swimsuit is... gone!?" Kotone's bikini falls off the moment she slides down the water slide at the pool. Kazushi quickly hides her chest and runs into the storehouse, but the sight of the two of them alone topless is too stimulating for a boy of his age...
Cast & Crew
Mai Kadowaki
Kotone Shirakawa (voice)
Tomoe Tamiyasu
Ayane Shirakawa (voice)
Sada Naohiro
Kazushi Sudou (voice)
Story & Production Details
Reviews & Thoughts
## **Review of *Overflow* — AnimeFesta** *Overflow* is a short anime series from AnimeFesta that follows Koshi and his two female relatives, Ayane and Kotone. What begins as an ordinary everyday situation gradually develops into a complicated relationship between the characters. Because each episode is relatively short, the series moves quickly and focuses more on character interactions than on a complex storyline. One of the main attractions of *Overflow* is its **short and straightforward format**. The episodes are easy to watch and do not require a large time commitment. The series is particularly aimed at viewers who enjoy adult-oriented anime with elements of romance and fanservice. In terms of characters, **Ayane and Kotone** have different personalities, which creates an interesting dynamic with Koshi. However, because of the limited episode length, the characters and their relationships do not receive as much development as they might in a longer romance series. Visually, *Overflow* uses a relatively simple animation style with a strong emphasis on fanservice. This can be considered both a strength and a limitation. Viewers looking for a deep romance or character-driven drama may find the story somewhat lacking, while viewers who enjoy short adult anime may appreciate its direct approach. ### **Conclusion** Overall, *Overflow* is best described as a **short adult-oriented anime featuring romance and fanservice**, rather than a series focused on complex storytelling or extensive character development. Its simple premise, short episodes, and emphasis on character interactions make it easy to watch for its intended audience. **Recommended for:** viewers who enjoy short adult anime with romance and fanservice. **Less suitable for:** viewers looking for deep romance, extensive character development, or complex world-building.
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