OTAKU Plan lunar new year sale 2025 has started!
You can check the full list of games on our Steam Publisher page!
Select your favorite game and don't miss this chance!
HENTAI Plan is a new brand that will focus on releasing interesting and fun "Adult only" games!
Story
One of the naturally occurring phenomena, "Dungeons."
These places, whimsically created by gods who govern heaven and earth, have captured the hearts of many.
People eventually become adventurers, and a culture of challenging various dungeons developed.
One day, two adventurers challenge a newly born dungeon.
They are the protagonist (senpai) and a junior adventurer named Nao.
It is a dangerous and unknown dungeon from which the research team has withdrawn, and the leader, the doctor, was taken away by monsters.
Along the way, Nao is attacked by a monster and falls into a special abnormal state.
To treat Nao, the protagonist picks up a paper dropped by the abducted doctor.
What kind of ending will this adventure have?
Game
Treat the heroine Nao, who is afflicted with various abnormal states, in erotic ways!
Nao loves her senpai from the beginning, so she will forgive him no matter what!
Use lovey-dovey treatments to conquer the dungeon!
Features
Pure love story
Card battles
A wide variety of H-scenes with abnormal states
About H-scenes
The main focus is on scenes combining pure love elements with abnormal states.
The heroine never engages in acts with anyone other than the protagonist.
HENTAI Plan is a new brand that will focus on releasing interesting and fun "Adult only" games!
Story
One of the naturally occurring phenomena, "Dungeons."
These places, whimsically created by gods who govern heaven and earth, have captured the hearts of many.
People eventually become adventurers, and a culture of challenging various dungeons developed.
One day, two adventurers challenge a newly born dungeon.
They are the protagonist (senpai) and a junior adventurer named Nao.
It is a dangerous and unknown dungeon from which the research team has withdrawn, and the leader, the doctor, was taken away by monsters.
Along the way, Nao is attacked by a monster and falls into a special abnormal state.
To treat Nao, the protagonist picks up a paper dropped by the abducted doctor.
What kind of ending will this adventure have?
Game
Treat the heroine Nao, who is afflicted with various abnormal states, in erotic ways!
Nao loves her senpai from the beginning, so she will forgive him no matter what!
Use lovey-dovey treatments to conquer the dungeon!
Features
Pure love story
Card battles
A wide variety of H-scenes with abnormal states
About H-scenes
The main focus is on scenes combining pure love elements with abnormal states.
The heroine never engages in acts with anyone other than the protagonist.
OTAKU Plan : The Winter Sale 2024 has started!
You can check the full list of games on our Steam Publisher page!
Select your favorite game and don't miss this chance!
The sun has vanished, and darkness corrodes the world. Great sages rise to reclaim the sun, only to meet their demise.
In the midst of this chaos, an angel named Helvetica is summoned. She claims to be "an angel that surpasses even the gods" and initially repels the distorted sun goddess. However, in order to restore the sun, she must capture the goddess. The goddess curses her, causing her to lose all her powers and preventing her from returning to her original world.
Helvetica embarks on a never-ending adventure with a diverse group of companions she meets along the way, with the goal of saving the world.
FEATURES
JRPG
Endless dungeon available
Multiple endings
Hairstyle and outfit changes possible
Estimated playtime of over 20 hours
Difficulty adjustment available
Please don't forget to follow us on our Steam Publisher page to get the latest information!
Thank you for your support. We hope you will enjoy our upcoming releases!
The sun has vanished, and darkness corrodes the world. Great sages rise to reclaim the sun, only to meet their demise.
In the midst of this chaos, an angel named Helvetica is summoned. She claims to be "an angel that surpasses even the gods" and initially repels the distorted sun goddess. However, in order to restore the sun, she must capture the goddess. The goddess curses her, causing her to lose all her powers and preventing her from returning to her original world.
Helvetica embarks on a never-ending adventure with a diverse group of companions she meets along the way, with the goal of saving the world.
FEATURES
JRPG
Endless dungeon available
Multiple endings
Hairstyle and outfit changes possible
Estimated playtime of over 20 hours
Difficulty adjustment available
Please don't forget to follow us on our Steam Publisher page to get the latest information!
Thank you for your support. We hope you will enjoy our upcoming releases!
A boy named "Cain" has lost his memories. Join him and the musket-wielding succubus maid "Grenadier" as you shoot your way through hordes of diverse monster girls!
Can he safely recover his memories and return to his happy days? That's entirely up to the choices you, the player, make!
FEATURES
Bullet-hell action STG
Stage selection system
Monster girls
Acquire abilities from defeated bosses
Selectable difficulty levels
Please don't forget to follow us on our Steam Publisher page to get the latest information!
Thank you for your support. We hope you will enjoy our upcoming releases!
A boy named "Cain" has lost his memories. Join him and the musket-wielding succubus maid "Grenadier" as you shoot your way through hordes of diverse monster girls!
Can he safely recover his memories and return to his happy days? That's entirely up to the choices you, the player, make!
FEATURES
Bullet-hell action STG
Stage selection system
Monster girls
Acquire abilities from defeated bosses
Selectable difficulty levels
Please don't forget to follow us on our Steam Publisher page to get the latest information!
Thank you for your support. We hope you will enjoy our upcoming releases!
Alisa, the protagonist attending a certain academy,
comes across a Grimoire that seals the soul of a powerful sorcerer by chance.
Through its power, Alisa becomes a sorcerer herself and learns that the academy she attends is actually a laboratory for magical experiments.
To save her loved ones from danger and to strengthen her own abilities, Alisa takes on a battle against sorcerers.
FEATURES
JRPG
Rich CG content
Classic command-based battle system
Defeat enemies to steal and equip their skills.
Original enemy graphics.
Please don't forget to follow us on our Steam Publisher page to get the latest information!
Thank you for your support. We hope you will enjoy our upcoming releases!
