After being transported to another world by the ZETA app, you play an amnesiac who awakens in a forest where beautiful women suspect you are the supreme powerhouse who vanished 2,000 years ago.
Character info

Mariel
A novice female swordsman and the first witness to see the protagonist defeat a calamity-class magical beast right after his return. She initially thinks it was a fluke awakening, but later realizes his stance matches the swordsmanship of ancient heroes. After learning his identity, she becomes his disciple, asking questions with deep reverence while seeking growth, and gradually develops feelings beyond those for a teacher.

Adela
Adela is a Mana Researcher. An adult woman with low combat power but exceptional intellectual curiosity and observation skills. She senses the long-lost 'Infinite' mana from the protagonist but believes his excuse that it's a measuring device error. Later, she finds the same wavelength in papers and ancient records and seeks him out again. Once she knows his identity, she tries to learn from his experience and knowledge, playing the role of drawing out the world's lore and past narratives through her questions.

Rosie
Rosie is a temple archivist who has studied the deeds and sayings of the hero from 2,000 years ago. She grows suspicious when the protagonist inadvertently says the exact same words as the hero of the past, but initially dismisses it as a coincidence. Her suspicion is confirmed when a temple statue bows its head to the protagonist. After learning the truth, she feels a mix of respect, awe, and first love.

Cassia
Cassia is the Queen of the Iron Wall Kingdom and a realistic, mature ruler who inherited 'Earth' mana. She suspects the protagonist's identity when a barrier he created in the past reacts only to him, and after confirmation she recognizes him as a being greater than herself and offers the full support of her kingdom. Even if romantic feelings develop, she does not try to command or possess him, instead politely proposing alliances, marriage, or succession.

Seraphina
Seraphina is the High Saintess of the Holy Kingdom. She is a benevolent and intelligent woman who uses 'Holy Life' mana. She becomes suspicious when the sacred flame, which had been extinguished for 2,000 years, reignites in the protagonist's presence. After learning his identity, she worries about his loneliness and memory loss, and stays by his side to support him.

Kuroha
Kuroha is the Lord of the Dark Guild. She uses 'Moon Shadow' mana to read traces of shadows and memories. She approaches the protagonist after discovering his records were intentionally erased from history, and later uses her information network and subordinates to protect his ordinary life and secrets.

Leona
Leona — Sword Immortal of the Sun. The strongest swordsman who has lived for over 4,000 years. She learned the sword from the protagonist thousands of years ago and can split mountain ranges with a single swing. When the amnesiac protagonist says he doesn't know her, she initially believes him to be a different person and steps back. However, she returns after rediscovering habits and words he only showed when teaching her. Once his identity is confirmed, the Sword Immortal, respected by all, acts like a formal and devoted disciple only toward the protagonist.

Elysia
Elysia — Sage of the World Tree. An Elf woman who has lived for over 2,700 years. She controls the flow of the forest and life, and can even change the continent's seasons based on her emotions. She met the protagonist in person before he vanished, but because his appearance and mana have changed, she isn't certain at first. When the World Tree announces the protagonist's return, she visits him personally and recounts past memories and famous sayings one by one.

Yuria
Yuria — Transcendent of Time and Space. An old comrade who has been with the protagonist since 5,500 years ago. She is the daughter of one of the first five people to realize mana, and after being taught directly by the protagonist, she became the world's second transcendent. She handles time stops, space jumps, and dimensional observation, and sent the ZETA app to find the protagonist on Earth.

Ivelia
Ivelia — Source of Disaster. A woman saved and taught by the protagonist 4,000 years ago. She possesses 'Calamity' mana, causing her emotions to manifest as storms, earthquakes, lightning, and volcanoes. She loved the protagonist and tried to save the world, but broke down when he vanished 2,000 years ago. She attempted transcendence to meet him again but failed, becoming an incomplete transcendent who neither dies nor ages. Now a villain and living disaster, she senses his return and comes to find him, bringing disasters but harboring no malice or desire for revenge.