F.O.S - Fellatio Collector is a single-player adult RPG with anime and erotic themes, released by Golden Ouken on October 4, 2023. The v3.0 final build is completed and available for Windows and Android. Players experience a shinobi-themed collecting adventure featuring the "succjutsu" mechanic, a Kunoichi Hunter mode, character creator with outfit toggles, and a gallery of playable scenes.
Fall of Shinobi: The Succjutsu Collector Mechanic
1. At the core of F.O.S - Fellatio Collector lies a unique shinobi fantasy: you seal Sakura Haruno and make her your slave, commanding her to collect kunoichi for you. This "succjutsu" system gives the game its identity as a collector-style adult RPG rather than a linear visual novel.
2. The Kunoichi Hunter mode, introduced in update 2.8, expands the gameplay further. You can unlock everything by completing a hunt one time. After completion, an "Give an order" button appears in the left upper corner, letting you direct your captured kunoichi with greater control as the mode continues to evolve in future updates.
3. Version 1.0 launched with 5 playable scenes in the gallery: Sakura, Sakura Part 1, Ino, Sasuko (Sasuke rule 63), and Madara (rule 63). The v3.0 final build contains 54 scenes in total across 46 characters, transforming a modest parody project into a massive collection experience for adult players.
A Massive Roster of 46 Characters and Rule 63 Parodies
1. The game's greatest strength is its staggering roster. Following the v1.0 release of 5 characters, version 1.5 added 14 new characters for a total of 19, including Naruko Uzumaki, Hanabi Hyuga, TenTen, Kaguya, Anko, Sarada, Temari, Tsunade, Kushina, Konan, Rin, Mikoto, and Sumire.
2. Update 2.0 exploded the roster to 46 characters with 54 total scenes. New faces include Sarada (Boruto: Two Blue Vortex), Delta, Eida, Himawari, multiple Hinata variants, Boruko, Chocho, Karui, Samui, Pakura, Pain (Animal Path Female), Buntan Kurosuki, Chino, Fu, Haku (Rule 63), Mirai, Yodo, Hotaru, Karin, Kurotsuchi, Guren, Wasabi Izuno, Mabui, Mei Terumi, Mito Uzumaki, Tsubaki Kurogane, Shizune, and many more.
3. The game fully embraces Rule 63 and gender-bending parody. Characters like Sasuko, Madara (rule 63), and Haku (Rule 63) demonstrate the developer's commitment to delivering a comprehensive adult Naruto universe. Every major female shinobi—and several gender-flipped male ones—finds a place in the collector's gallery.
Character Creator, Outfit Customization, and Platform Support
1. The v2.5 update introduced a Character Creator with outfit additions for Hanabi, Kaguya, Konan, Kushina, Mikoto, Naruko, Rin, Sakura (Boruto), Sarada, Sumire, Temari, TenTen, and Tsunade. A Character Creator Sex Toggle was also added, giving players deeper control over how each custom creation behaves in scenes.
2. Update 2.6 delivered an enormous outfit expansion covering Sarada, Delta, Eida, Himawari, Hinata (multiple versions), Sakura (The Last), Boruko, Chocho, Karui, Samui, Pakura, Pain (Animal Path Female), Buntan Kurosuki, Chino, Fu, Ino, Haku (Rule 63), Mirai, Yodo, Hinoko, Hotaru, Karin, Sound 4's Kin, Kurotsuchi, Guren, Wasabi Izuno, Mabui, Mei Terumi, Mito Uzumaki, Tsubaki Kurogane, and Shizune.
3. The v3.0 final build was remade from scratch, reusing most sprites while adding many new features including 6 characters in Kunoichi Hunter mode. The Android version launched on June 16, 2025, with UI changes and optimization for better loading times. The complete package is available as a 276 MB download for Windows, with a separate 103 MB Android-only build.
