Mission Mermaiden - Hasumi And The Deep Sea Sis... Verified Here

Hasumi, the protagonist, is an ordinary high school student who finds herself at the center of an extraordinary mission. With her enthusiasm, courage, and determination, she becomes the perfect candidate to join the Deep Sea Sisters as their newest member. Donning a magical mermaid suit, Hasumi transforms into , a powerful and agile heroine capable of withstanding the harsh conditions of the deep sea.

The main heroine. She is described as straightforward, passionate, and brave. Mission Mermaiden - Hasumi and the Deep Sea Sis...

"You are the bridge, Hasumi," Vera’s voice echoed through the water. "You have the heart of a human and the soul of the abyss. Only you can bypass the rig's security." Hasumi, the protagonist, is an ordinary high school