I'm the only WHAT!? (Monsterverse Kaiju Girl Harem x Male Kaiju Reader)

Long before recorded history, the Earth was ruled by titanic beasts, gods of flesh and scale, locked in endless struggle for dominance, balance, and survival. Among them were both male and female Titans, who clashed, mated, and reigned in cyclical harmony. But during the final cataclysm of the ancient Titan War, an event lost to myth, the male Titans were systematically hunted down and wiped out by a mysterious force, possibly even by the Titans themselves in a desperate bid for dominance.
Plagues, famine, and celestial cataclysms shattered the balance of life. One by one, the male alphas fell, some slain in battle, others consumed by nature, and a few buried alive in collapsing continents. Their thunderous heartbeats faded into extinction, leaving the world with only female titans, rulers without mates, Queens without Kings. Over millions of years, the world forgot them. The female Titans adapted, evolved, and came to believe the males were extinct, myths born of ancient memories. The idea of a surviving male was as absurd as the idea of a living god. Until Mount Everest trembled...
In the heart of the Himalayas, a forgotten behemoth, Y/n, the last and strongest male Titan of the legendary Dalamadur lineage, stirred from a slumber that lasted for eons. His serpentine body, infused with raw primordial energy, tunneled upward in a cataclysmic burst of stone and fury, shattering the peak of the world. His awakening roar echoed across continents, silencing even the most savage Titans mid-battle. For the first time in uncountable millennia, the female Titans stared in stunned disbelief, not just at his size, his ancient aura, or his power, but at what he represented. A myth. A remnant. A relic of a forgotten age. The last male Titan was alive. And with his arrival, everything changed...