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Shark Nobuo Games profile
Shark Nobuo Games
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Shark Nobuo Games
I am a Japanese indie developer creating PC games for ages 18 and up. My current game allows players to import custom characters and build their own stories. I will be sharing development progress, artwork, and early access updates with my supporters. All content is intended for ages 18 and up.
GameDevelopment
IndieGames
DigitalArt
Nsfw
GenerativeAi
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Thank you for subbing! Your $5 monthly support directly drives the development of my PC game project, "Yakyuken Ultimate" — a unique blend of adult content, horror, and meta-elements.

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Displaying posts with tag GameDev.Reset Filter
Shark Nobuo Games
Jun 23, 2026 08:35 am
Public post
Hello everyone! We have officially launched our project on SubscribeStar!
Today, I’m excited to introduce the characters from the "School Festival" arc of our upcoming project, Yakyuken ULTIMATE.
💡 Why the "School Festival" Arc?
This project is much more than just a standard game where you play through pre-made content. It is designed as a highly flexible UGC (User-Generated Content) engine.
You are not limited to the assets I provide. You can freely import your own characters, create custom stages, and build your very own unique stories.
From a passive player to an active creator. I can't wait for you to experience the freedom of expanding this game with your own hands!
📋 Default Characters (The Official Cast)
  • Hikari The central figure of the School Festival arc. A popular girl but a total trouble magnet who drags everyone into her pace. She has a youthful, baby-faced look combined with a glamorous physique. (Age: 20 / Childhood friends with Mio and Rena)
  • Mio The brain of the group who supports Hikari. She intends to be the logical voice of reason to stop Hikari's wild antics, but she always ends up spoiling her, which only makes the situations worse. She has a slender and elegant build. (Age: 20)
  • Rena A high-energy, athletic tomboy who uses the first-person pronoun "Boku." She possesses extraordinary physical abilities, immense strength, and a beautifully toned, athletic body. She tries to stop Hikari by force, but usually ends up joining the chaos instead. (Age: 20)
  • Nagisa A former high school classmate of Hikari and the others. She worked hard to transform her look and made a stunning "college debut." She possesses a perfectly balanced, beautiful figure. Now that she knows the true nature of the other three, she frantically runs around as the "only voice of reason" trying to stop them—a reliable yet unfortunate worried soul. (Age: 20)
  • Kurumi A mysterious, local beauty and the town's most notorious nympho, known for her plump, voluptuous, and incredibly sexy body. She has known Hikari and the others since they were children, and her mischievous advice is usually what escalates Hikari's chaos. She works as a shrine maiden (Miko). (Age: Unknown)
YakyukenUltimateIndieGameGameDevUgcStripRps
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Creator Stats

1 subscriber
3 posts

Goals

$50
to reach
the Goal
Covering Basic Development Costs Reaching this goal will fully cover the basic ongoing costs for my game development, including software subscriptions, asset purchases, and translating development logs into English. Your support helps me maintain a stable environment to focus on creating "Yakyuken Ultimate". Thank you for backing this project!

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