Summer 2025 is gearing up to be an exhilarating time for harem anime enthusiasts, filled with new narratives, delightful characters, and a wealth of romantic surprises. Whether you’re a seasoned fan or just discovering the genre, this selection has something for everyone. Among the most eagerly awaited titles are Rent-a-Girlfriend Season 4, which continues the amusing and touching adventures of Kazuya and his intricate love life, and A Couple of Cuckoos Season 2, which explores the chaotic yet lovable relationships of its distinctive cast. Prepare yourself to explore the top 10 harem anime of Summer 2025 that you will surely adore!

9 Nine Ruler’s Crown is an episodic bishoujo adventure series taking place in the town of Shiromitsugawa, where enigmatic Artifacts bestow superpowers upon their Users. The narrative centers on the main character and heroine as they cultivate trust and romance while delving into a string of supernatural murders, pursuing the individual responsible for these heinous acts. The anime consists of one season comprising 12 episodes, each lasting between 23 to 24 minutes. You can watch the series on various platforms that offer anime streaming, including Crunchyroll.

The Stunned Hero and the Assassin Princesses is a comedic adventure anime that follows Toto, a remarkably talented yet painfully shy hero who finds it difficult to assemble a party, leaving him confined to his hometown. His world takes a turn when three stunning women, Ciel, Anemone, and Gore, extend an invitation for him to join their group, igniting a spark of excitement within him for the very first time. However, what Toto doesn’t realize is that these women are assassins with the intent to kill him, resulting in a perilous harem romcom where Toto, who often faints from anxiety in the presence of women, must maneuver through the lethal motives of his deadly allies. The anime consists of one season comprising 12 episodes, each lasting between 20 to 24 minutes. You can catch the series on various platforms that offer anime streaming, including Crunchyroll.

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Koujo Denka no Katei Kyoushi narrates the story of Allen, a young sorcerer who, after not passing his final exam for a role at the royal court, longs for a peaceful existence in the countryside. However, without the money to return home, he takes on a tutoring job for Tina, the daughter of the powerful Duke Howard. While Tina performs well in her studies, she finds spellcasting challenging, a crucial ability required for the entrance exams to the prestigious Royal Academy. Allen must utilize his unique magical skills to help Tina tackle this obstacle, which has baffled even the most adept wizards. The anime will consist of 12 episodes, each approximately 23 minutes long, and will be accessible on platforms such as Crunchyroll.

Watari-kun’s ****** Is about to Collapse centers on Naoto Watari, a young man who has faced considerable challenges, including the death of his parents two years prior, and is now living with his sister at their aunt’s home. Renowned for his intense protectiveness over his sister, which has earned him the nickname “the guy with the sister complex,” Naoto has always prioritized her safety. However, his life takes a significant turn when Satsuki, a childhood friend turned rival, enrolls at his school, shattering his previously mundane routine. As tensions escalate and past relationships are put to the test, Naoto must navigate the turmoil that Satsuki introduces, which may just be the beginning of further obstacles. The series comprises about 12 episodes, each lasting roughly 24 minutes. You can catch Watari-kun’s ** Is about to Collapse on popular streaming services like Crunchyroll or Funimation, depending on your location.

There’s No Freaking Way I’ll Be Your Lover! Unless is an anime that centers on Renako Amaori as she embarks on leaving her awkward junior high experiences behind and transitions into high school as a “normal” girl with typical friends. However, everything shifts when she encounters Mai Ouzuka, a beautiful and confident fashion model who is her complete opposite. Despite their differing personalities, they connect well, but complications arise when Mai confesses her feelings for Renako. Renako attempts to persuade Mai that their friendship holds more significance than romance, yet Mai is resolute in proving that they are meant to be together. The anime is expected to consist of approximately 12 episodes, each lasting around 24 minutes, and should be accessible on platforms such as Crunchyroll or Funimation.

A Married Woman’s Lips Taste Like Canned Chu-hai is an erotic romance anime set to debut in July 2025, based on the manga by Chinjao Musume and Tama Nogami. The narrative centers around Tsuyoshi, a 22-year-old university student whose ordinary life of attending classes and delivering food is interrupted by his love for strong canned chu-hai. His dull routine takes an unexpected twist when he gets involved with Yui Koriyama, a married woman he has secretly admired since he was a child. The series will be released in both “Broadcast” and “Deregula” editions. It comprises 12 episodes and will stream on various platforms.

Tsuyokute New Saga chronicles the adventures of Kyle, a skilled magic swordsman who triumphs over the Demon Lord in an intense confrontation. Unexpectedly, he finds himself sent back four years to the onset of the demon invasion. Equipped with the knowledge and abilities gained from his past experiences, Kyle is determined to avert the disasters he faced in his previous life. The series consists of 12 episodes, each lasting 24 minutes, and can be streamed on popular anime platforms such as Crunchyroll.

A Couple of Cuckoos Season 2 continues the humorous romantic twists involving Nagi Umino and Erika Amano. These two teens, who find out they were switched at birth, are thrust into an arranged engagement by their families, hoping they will eventually fall in love. This upcoming season is anticipated to delve deeper into Nagi and Erika’s changing emotions, their competition with other romantic interests, and the difficulties of juggling personal goals alongside family expectations. While the first season consisted of 24 episodes, the exact number of episodes and their length for Season 2 have yet to be officially revealed. Currently, Season 2 is not available for streaming on any service, but fans are encouraged to check back as the release date approaches for updates on where it can be viewed.

I Was Reincarnated as the 7th Prince Season 2 is set to premiere in July 2025, continuing the adventures of Lloyd, the seventh prince of the Kingdom of Saloum, as he refines his magical abilities. This upcoming season is anticipated to explore volumes 3 and 4 of the original light novel, providing a deeper insight into the world and its characters, particularly Lloyd’s relationships with his sisters. New characters, Escher and Saria, will make their debut, voiced by Manaka Iwami and Minami Tsuda, respectively. Season 2 will feature 12 episodes, each running for about 24 minutes. Fans will be able to watch the series on platforms such as Crunchyroll and other anime streaming services when it launches.

Rent-a-Girlfriend Season 4 is set to premiere in July 2025. This upcoming season will delve into the “Hawaii Trip” narrative, where the fabricated romance between Kazuya and Chizuru intensifies during a group getaway. Audiences can look forward to a wealth of drama and character development as Kazuya and Chizuru navigate their feelings while engaging with other characters such as Mami, Ruka, and Sumi. The season will adopt a split-cour structure, featuring approximately 24-25 episodes spread over six months, with a short break in between. Fans will be able to stream the series worldwide on Crunchyroll.

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The Rising of the Shield Hero Season 4 will center on Naofumi Iwatani as he navigates the challenges of protecting Raphtalia from assassins and battling the Q’Ten Lo empire, all while facing the imminent threat of the Phoenix. This season is set to premiere in July 2025, consisting of 12 episodes, each with a runtime of 24 minutes. Viewers will be introduced to new characters, including Werner, voiced by Takeo Ōtsuka, and Jaralis, voiced by Jirō Saitō. Fans can watch the series on Crunchyroll.