Does Their Secret Obsession(The Reverse Harem) Have Anime?

I've dug through the usual places—fan forums, streaming catalogs, and a bunch of author and publisher pages—and the short version is: there isn't an official anime adaptation of 'Their Secret Obsession (The Reverse Harem)' that I can find up through mid-2024. A lot of titles with 'reverse harem' in their subtitle are often web novels, otome adaptations, or manhwa/webtoons, and those formats sometimes sit in limbo without ever getting the anime greenlight. If this is a smaller indie web novel or a self-published series, that would explain why it hasn't made the jump to TV or streaming yet.

Why that happens is kind of fascinating to me: anime studios pick based on audience size, merchandising potential, and rights availability. Even if a story has a dedicated small community, the business side—publishers, contracts, and production committees—can block or delay an adaptation. Also, some reverse harem works are targeted as mobile otome games or drama CDs first; those sometimes get animated later, but it's not guaranteed. I've seen titles get fan animations or short PVs on YouTube or NicoNico before any official anime ever appeared, so that’s another possibility if you see something that looks animated but isn’t a full series.

If you want something to binge right away while waiting, there are plenty of established reverse harem anime and otome adaptations that scratch a similar itch—think 'Ouran High School Host Club', 'Brothers Conflict', 'Uta no Prince-sama', 'Diabolik Lovers', 'Norn9', and 'AMNESIA'. For tracking whether 'Their Secret Obsession' ever gets adapted, keep an eye on sites like MyAnimeList and Anime News Network, or the original publisher's socials, because those are where announcements usually land first. Personally, I love hunting down the original source—reading the web novel or scrolling through the official manhwa gives a different intimacy than the anime ever will, and sometimes the art and character notes in the source material are pure gold. I’d be thrilled to see it animated someday, but for now I’m enjoying the community fan art and headcanons around the story.