Elf

[However, your daughters, being only Chieftain-class, were easily subdued by Ōtohime. Upon learning their identity, she released them unharmed.]

[That night, Ōtohime visited your chambers as usual, intending to claim her conjugal rights.]

["Ōtohime, did my daughters visit today?"

Nodding gently, she pinned you down, her overwhelming strength silencing further inquiries...]

[Year Seventy-Five: Your Savage Fury (lv.max) evolved into Nether Beast Aura (lv.1). This potent energy coursed through your being, amplifying your strikes twelvefold. Any physical contact infused enemies with destructive energy that ravaged their systems and proved nearly impossible to purge.]

[Despite this formidable power, Ōhime remained superior, primarily due to your reluctance to harm her.]

[Year Seventy-Six: Ōtohime's pregnancy ended your confinement. Realizing her sole desire had been bearing your child, you naturally remained by her side.]

[Year Seventy-Seven: Your daughter with Ōtohime was born. Naming her Ming, following her mother's single-character naming convention, you cherished her equally despite cultural biases favoring sons.]

[Motherhood softened Ōtohime's temperament temporarily, though she eventually reverted to her domineering self.]

[Year Eighty-Three: You broke through to Emperor-class, evolving into Nether Oni-Goblin King. Even you struggled to believe your rapid advancement. Ōtohime, having achieved Emperor-class at nearly three hundred, was astounded by your sub-century ascension.]

[Reaching Emperor-class enabled you to restrain Ōtohime without harm, regaining freedom. You successfully united Ōtohime, Hanamai, and Kaina, establishing a royal household.]

[Keeping your breakthrough secret from all but Ōtohime, you feared the Oni Emperor's potential apprehension regarding your prodigious talent.]

[Year Ninety-Seven: Progress slowed significantly post-Emperor-class. Each level became exponentially more challenging, though skill mastery continued enhancing your overall prowess - still negligible compared to Sovereign-class.]

[Year One Hundred: Celebrating your centennial privately with family, your youthful, handsome appearance defied typical monstrous traits.]

[That year, you delegated most territorial authority to Ming, intervening only in major decisions while enjoying retirement.]

[Year One Hundred Two: Learning of elven territories, you sought their legendary Life Spring - said to greatly enhance vitality for both humans and monsters.]

[Year One Hundred Five: Discovering elven lands, you found yourself unwelcome. Sensing at least Sovereign-class presence among the elves, you avoided confrontation, frequenting their borders cautiously.]

[Several elven maidens, purely out of curiosity unrelated to your striking appearance, sought to discuss interspecies reproduction possibilities.]

[Resisting their charms, you declined such discussions.]

[Later, encountering an elite-tier elven girl surrounded by four Chieftain-class Dire Wolves, you intervened to foster goodwill.]

[Your overwhelming presence immobilized the wolves instantly. Simultaneously dispatching them, you shielded the girl's eyes from the gruesome aftermath.]

[Your formidable aura attracted elven patrols. Mistaking your protective gesture for abduction, they unleashed arrows which you intercepted to safeguard the girl.]

[The arrows merely grazed your flesh. The elven girl quickly clarified: "Brother Tala, he saved me! Stop attacking!"]

[The patrol leader, Tala, apologized sincerely, healing your wounds with nature magic and extending an invitation to their settlement.]

[Feigning hesitation, you inquired: "Might my appearance frighten your kin?"

"Not at all, friend. Elves judge not by appearance. Besides, you're quite handsome," Tala assured earnestly.]

[After consideration, you accepted: "Very well, I'll accompany you."]

[Your agreement delighted the patrol. En route, the rescued girl engaged you frequently in conversation. Learning you were a Goblin astonished them - none had encountered such a powerful specimen.]