Anime often captivates audiences through its opening theme songs, which can set the tone for an entire episode. The right theme can ignite enthusiasm even in the most doubtful viewers, sometimes leading them to watch a series solely based on the strength of its opening. The Winter 2025 anime season is a fine example of this phenomenon, unveiling an impressive array of new and returning shows, each accompanied by remarkable theme songs that often become highlights of the series.
Let’s take a closer look at some standout openings from the Winter 2025 season that left a lasting impression, whether or not viewers were fans of the respective narratives.
10. “Run, Sakamoto” By Vaundy (Sakamoto Days)
Opening Theme To TMS Entertainment’s Sakamoto Days
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TMS Entertainment’s Sakamoto Days follows Taro Sakamoto, who transitions from a legendary assassin to a family man. Five years into his new life operating a convenience store, Sakamoto is forced back into action when a bounty threatens his peaceful existence. Despite Sakamoto Days’ lackluster production quality, the theme song “Run, Sakamoto” by Vaundy showcases impressive vocals, although the accompanying visuals fall short of capturing the dynamic action typical of the genre.
9. “Cuz I” By Hikaru Makishima (The Red Ranger Becomes An Adventurer In Another World)
Opening Theme To Satelight’s The Red Ranger Becomes An Adventurer In Another World
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Satelight’s The Red Ranger Becomes An Adventurer In Another World introduces Togo Asagaki, a hero transported to a fantastical realm after sacrificing himself. Though the visuals of “Cuz I” aren’t groundbreaking, they effectively complement the whimsical energy found throughout the series, paralleling the comedic elements of tokusatsu narratives, making it a catchy and engaging watch.
8. “Casanova Posse” By ALI (Dr. Stone Season 4, Part 1)
Opening Theme To TMS Entertainment’s Dr. Stone
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In the latest installment of TMS Entertainment’s Dr. Stone, viewers follow Senku Ishigami as he revives civilization post-petrification. The opening theme “Casanova Posse” by ALI marks a vibrant return, igniting excitement among fans with its lively rhythm and welcoming energy, despite visuals that could be more polished.
7. “Kinnikuman Hero” By Masaaki Endoh (Kinnikuman: Perfect Origin Arc Season 2)
Opening Theme To Production I.G’s Kinnikuman: Perfect Origin Arc
In a sequel to the beloved shōnen classic, Kinnikuman: Perfect Origin Arc revisits the adventures of the former champion on Planet Kinniku. The theme song “Kinnikuman Hero” by Masaaki Endoh pairs nostalgic storytelling with dynamic animation, seamlessly reflecting the series’ heritage while eliciting excitement for its epic narrative.
6. “My Own Revolution” By Shishamo (Flower And Asura)
Opening Theme To Studio Bind’s Flower And Asura
Flower and Asura narrates the journey of Hana, whose storytelling talent is recognized by the local broadcasting club. While the visuals in “My Own Revolution” may be simple, they resonate beautifully with the show’s tranquil slice-of-life theme, while elevating the emotional quality of the narrative.
5. “Splendid Bounty” By Lilas Ikuta (The Apothecary Diaries Season 2)
Opening Theme To OLM, Inc.’s The Apothecary Diaries
Set in a captivating Imperial China-like environment, The Apothecary Diaries continues to follow the exceptional apothecary Maomao. The theme song “Splendid Bounty” by Lilas Ikuta enhances viewer engagement with both its energizing vocals and visually striking animation, aligning well with Maomao’s complex courtly interactions.
4. “Bow And Arrow” By Kenshi Yonezu (Medalist)
Opening Theme To ENGI’s Medalist
In Medalist, the aspirations of aspiring Olympic figure skater Inori Yuitsuka come to life. Kenshi Yonezu’s “Bow and Arrow” combines heart-pounding melodies with vivid animation that underscores the character’s journey, effectively encapsulating the challenges she faces.
3. “ReawakeR” By Lisa (feat. Felix of Stray Kids) (Solo Leveling Season 2)
Opening Theme To A-1 Pictures’ Solo Leveling
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A-1 Pictures’ Solo Leveling captivates viewers with its engaging storyline centered around a weak E-Rank Hunter gaining extraordinary powers. The opening theme “ReawakeR” merges electrifying vocals with striking visuals, aligning perfectly with the adrenaline-fueled narrative the series presents.
2. “Zen” By BAND-MAID (Zenshu)
Opening Theme To MAPPA’s Zenshu
In Zenshu, protagonist Natsuko Hirose finds herself in a familiar yet twisted world of animation. The theme “Zen” by BAND-MAID not only elevates the dark narrative but also showcases exquisite visuals, enhancing how the series explores themes of creation and destiny.
1. “KiLLKiSS” by Ave Mujica (Ave Mujica — The Die Is Cast)
Opening Theme To Sanzigen’s Ave Mujica — The Die Is Cast
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The latest entry in the BanG Dream! franchise, Ave Mujica — The Die Is Cast, presents a darker narrative, effectively illustrated by the haunting theme “KiLLKiSS” by Ave Mujica. The combination of gripping visuals and powerful vocals reinforces the series’ emotional weight and solidifies it as a leading contender for the best theme song of the Winter 2025 season.