Help! I changed the gender of the male protagonist in the yandere game

Mermaids are a special kind of yokai, said to be treasures from head to toe, their tears turning into pearls, and their flesh granting immortality when eaten.

This book is first published on the entire network by 𝚝𝕨𝕜𝕒𝕟.𝕔𝕠𝕞.

In the legends of the Eastern Sea island country, there's a woman from Wakasa Province who ate mermaid flesh and lived for eight hundred years, known as the Eight Hundred Biqiu Ni.

Of course, there's also a saying that this Eight Hundred Biqiu Ni was entertained by the Dragon God and received the elixir of immortality from him.

"Mermaids... are inherently connected to the Dragon Palace and the Dragon God."

Hyakusuke thought, this is not an item in the game.

From the Snow Woman Princess's words, the effect of mermaid flesh is to automatically restore a game character's health when they are at critical health.

"Even if you suffer severe injuries, as long as your heart and head aren't crushed, any injury can be recovered with the life energy granted by the mermaid flesh."

The Snow Woman Princess said calmly, "Furthermore, instant-death spells and curses will no longer affect you. It's best to kill you with physical means."

"Um... if my head is chopped off, can I still recover?"

Hyakusuke asked.

"As long as your head isn't smashed to pieces, it's fine to reattach it quickly."

"However, I must also remind you that the most important thing to unleash this power is that you must have a strong will to survive. As long as you don't want to die, the effect of the mermaid flesh will continue to work."

The lake master, Snow Woman Princess, stated that as long as his heart and brain tissue were not damaged and his life force remained, regeneration and recovery would continue. Furthermore, Hyakusuke would possess several times the life force of an ordinary person.

"Maintain a strong will to survive? Will this regenerative power continue even when I'm unconscious?"

He was dissatisfied with this vague explanation and hoped to obtain more information.

"That's irrelevant."

The lake master said, "No matter what state you are in, as long as you don't give up on the idea of living, this power will continue."

Not bad.

Hyakusuke thought, looking at it this way, the benefits of this mermaid flesh are quite significant.

The Tokijiku Fruit and the Shukuchi Charm are both in hand.

The Baku Egg can be said to be an unexpected surprise.

Finally, there's the extra perk: mermaid flesh.

His trip could be called a "complete success."

...

Seeing Hyakusuke's figure gradually disappear into the mist, Tsukuyomi no Yami's mood became somewhat anxious.

"Inma Rasetsu."

She summoned her shikigami.

In the night, there was a loud flapping sound. In an instant, something quickly swept over the girl's head—

"I'm counting on you."

As she spoke, the huge black figure flapped its wings and flew over, screeching in a terrifying manner.

Tsukuyomi no Yami jumped towards the misty lake surface. She didn't fall into the water. A claw reached out and grabbed her arm.

In the dark moonlight, an ugly demon bird with a human face extended its claws. These black claws were gnarled and狰狞, and the upper limbs bulged with muscles—the monster bird extended its black claws, flexibly grasping the girl's arm, and her body was pulled into the air.

The ugly demon bird had an old human face, like a crow or similar bird. A ring of strange silver hair encircled its shoulders and neck, shimmering in the moonlight. This was Tsukuyomi no Yami's shikigami, "Inma Rasetsu."

It is said that the prototype is a crane-shaped demon, however, in the stories circulating in the island country, it is a monster bird with a human face.

Tsukuyomi no Yami tracked Hyakusuke's whereabouts from the air, discovering that he had come to the center of the lake through a "road" hidden in the moonlight. There was a protruding rock there, like an island in the center of the lake.

"Hyakusuke-sama, what are you doing?"

Suddenly, at that moment, white mist surged up quickly. Hyakusuke's figure swayed in the mist, and in an instant, it dissolved into the pale mist and became invisible.

"This?"

Tsukuyomi no Yami descended from the air. Another vortex of mist swept over. She waved her hand violently, and powerful spiritual power spread out, forming a wind that blew away the surrounding mist.

"...Where is he?"

She shook off the claws of the human-faced bird "Inma Rasetsu," and lightly landed on the ground from mid-air.

The soft hem of the girl's kimono fluttered. As she landed, she tiptoed, and the black leather shoes on her feet landed on the rock first.

"How could he suddenly disappear?"

Yami couldn't see Hyakusuke's figure. He seemed to have truly disappeared.

At the same time, most of the mist on the lake surface dissipated, and the Snow Woman Lake under the moonlight fell into a serene beauty. The lake surface was like a mirror.

"He can't have just disappeared like that, right?"

She felt puzzled and unusually worried.

Suddenly, a violent dizziness instantly surged into her brain.

Yami's footsteps stopped.

Ugh...

The girl covered her forehead, feeling as if her head was filled with seaweed, heavy and dizzy. Her stomach also began to cramp.

"This is..."

Her head was also dizzy, and her stomach became uncomfortable. She squatted down on the spot to resist the unbearable nausea.

"What exactly is wrong with my body..."

Tsukuyomi no Yami pressed her abdomen. Pain spread from the very center of her abdomen. She had never been sick before. The current feeling was like being entangled in many, many spiderwebs, her body heavy, sluggish, and unable to move.

"No!"

She still needed to find him.

"He might be in the lake..."

She came to this conclusion.

It would be best to enter the lake to investigate.

She didn't understand why she was so concerned about Hyakusuke.

Perhaps, it was because she wanted to repay her life-saving benefactor.

—No, it wasn't... It was possible that she saw the figure of someone familiar in him.

She could still remember some of the experiences in the Spider Den. She hadn't forgotten the memory of being saved by Hyakusuke.

At that time, Yami almost overlapped the figure of the lower ninja who saved her with the figure of a friend from the past.

Her consciousness began to drift. Tsukuyomi no Yami recalled her childhood experiences—it was a hot summer. A warm wind caressed her cheeks. The warm sunlight shone in the forest—the feeling of summer filled her body, and the cicadas chirped loudly.

"Must... find—"

The girl stood up, swaying.

As if struck by lightning, an indescribable burning and pain came from her lower abdomen. Stars appeared in her eyes, and the sudden dizziness made her feel as if her vision was spinning, and she almost fell.

"Are you okay?"

A hand reached out and grabbed her hand.

The girl's consciousness gradually faded, and she shook her head and collapsed.

...

In the mirage created by the lake master, Snow Woman Princess, the flow of time was different from the outside world.

Hyakusuke had just returned when he was surprised to find Yami about to faint. She was like a puppet with its strings cut, without any strength.

"Yami-sama, are you okay?"

He hurriedly grabbed her and supported her shoulders.

"I... I think I'm about to die."

Tsukuyomi no Yami opened her eyes slightly. Her face was unusually weak, and she almost collapsed into Hyakusuke's arms.

"Have you been cursed, or what happened?"

Hyakusuke was shocked.

Could it be that Tsukuyomi no Yami was attacked in the very short time he was away.

"I-I don't know."

The girl's face was pale. She shook her head, and the words that came out of her open mouth were weak and powerless: "I don't know what's going on? My stomach hurts so much,"

She smiled at Hyakusuke.

"I'm really sorry, Hyakusuke-sama... Next, please listen to my last words. I have words to leave to Ayaka and Matsudaira..."

"Wait a moment."

Hyakusuke quickly asked: "May I ask, Yami-sama, what kind of symptoms do you have?"

As he said these words, a flash of inspiration came to him, and he quickly followed up with: "Are you dizzy, nauseous, want to vomit, feel weak all over..."

"Yes."

She nodded blankly. Finally, she added another sentence: "I think I'm bleeding too, down there..."

Hearing these words, Hyakusuke almost fell to the ground. Okay, everything has finally come to light.

"Such is the way of the world, the moon has its phases of waxing and waning, and gathering and separation are impermanent," Yami showed a pale smile, her lips also turning white as if lacking blood.

"However, I haven't recovered the territory of the Tsukuyomi clan, nor have I made any achievements... To die like this is somewhat unwilling."

Hyakusuke sighed deeply in his heart.

"Yami-sama, you won't die."

"Saying such comforting words at this point is meaningless."

Her lips trembled slightly: "I know I'm about to die."

"You won't die."

Hyakusuke said expressionlessly: "Yami-sama, please believe me, you don't have any illness at all, you're just—"

He paused slightly, cleared his throat, and suppressed his awkward emotions.

"Y-Your period, has started."

The girl showed a stunned expression for a moment.

Then, her eyes widened, as if she understood something, and her entire face turned as red as if it had been burned by fire.

"Kyaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!"

She let out a scream of anguish.

...

Having no time to care about Tsukuyomi no Yami, who was sunk by shame.

Hyakusuke hurriedly picked her up, sent her to the campsite, and secretly woke up his foster sister Ayaka, and told her the situation.

Ayaka's face turned pale after hearing it, but she still took on the responsibility of taking care of her brother, and explained the periodic physiological problems unique to women to her in great detail.

However, Tsukuyomi no Yami had already shrunk into a ball at this time, and fell into a self-closing mode.

After dealing with all this, Hyakusuke breathed a sigh of relief and planned to go back and rest.

At the same time, after learning of this news, someone on the other side of the shadow, and someone who had been eavesdropping for a long time, also made a move.

—It's finally started, according to this calculation, it will be fine in 16 days...

—Eh? So fast, it seems necessary to make a trip in person recently, and send some blood-replenishing medicine by the way...

The oni women of the Kurohimeyama clan hid in the dark and chuckled and snickered.

They quietly waited for the opportunity to arrive, the day when the fruit would ripen and fall.