If you choose Option B, the final cutscene shows Hasumi surfacing alone. She writes on her notepad: “They are quiet now.” She salutes the sunrise. No music plays. Credits roll over the sound of gentle waves.
: The world has been devastated by an alien invasion.
Over the years, the game's community has kept the title relevant through gameplay showcases and custom modifications. Notably, the —frequently discussed and archived on community hubs and video platforms like YouTube under titles like The Downfall of Hasumi —rebalances the game’s baseline difficulty. These community mods often introduce: Higher enemy density. More punishing stage hazards.
If you are interested in more details, the story walkthrough and character profiles are extensively documented on Moegirlpedia (zh-hk) . If you'd like to explore similar games, I can provide: A list of other Similar anime-style games on DLsite A deeper look at the plot of the first Hasumi game Let me know what you'd like to dive into next! 美人魚之謎-蓮與深海姐妹 - 萌娘百科 mission mermaiden hasumi and the deep sea sist
Despite the progress made by Hasumi and the Deep Sea Sisters, there are still many challenges ahead. The ocean continues to face threats from human activities, and the mermaids' work is far from over. They must continue to educate humans about the importance of preserving the marine ecosystem, and to work towards creating a world where humans and mermaids can coexist in harmony.
Mission Mermaiden ~Hasumi and the Deep Sea Sisters~ (Japanese: ミッションマーメイデン-ハスミと深海の姉妹-; Chinese: 美人鱼之谜-莲与深海姐妹) is a 2020 action game developed by the Japanese indie circle with artwork by Dangan Neko (彈丸貓/弾丸猫) . It is the third adult (R18) game from this developer. The game is often referred to by its keyword, "mission mermaiden hasumi and the deep sea sist," which points to a unique 2D action experience that blends sci-fi setting with classic arcade gameplay.
, which adds new mechanics and story layers, though these often come with a much higher difficulty spike. The Mystery: If you choose Option B, the final cutscene
The story takes place in the year , a time when the world has been ravaged by an alien invasion. Hasumi, a skilled fighter, is dispatched to a remote land to confirm the existence of a rumored bioweapon hidden deep within the Karimantan Jungle .
Together, the Deep Sea Sisters embarked on a series of missions to protect the ocean and its inhabitants from the threats posed by human activities such as pollution, overfishing, and climate change. They worked tirelessly to clean up the ocean floor, to restore damaged coral reefs, and to educate humans about the importance of preserving the marine ecosystem.
The character of Hasumi, often associated with the title "Mission Mermaiden," originates from Japanese media, specifically from the realm of tokusatsu (live-action superhero) and kaiju (monster) films, television shows, and related merchandise. While detailed narratives about Hasumi can vary across different sources, she is commonly depicted as a mermaid or mermaid-like creature with a strong connection to the ocean and its creatures. Credits roll over the sound of gentle waves
Hasumi must investigate and confirm the existence of a rumored The Conflict:
At its core, Mission Mermaiden is a where players control Hasumi through several challenging worlds. The gameplay stands out for its emphasis on quick reflexes and stylish combat.