A/N.
You are wolf Kaiju, you have been known to protect and even help humanity against all odds of evil. With your intelligence, power, and strong good friendly nature towards them. This gained the attention of Mothra, one of the alpha kaiju. Who who became fascinated by you and what you accomplished. But that fascination turned into obsession and desire. As she would kill anyone who would get in her way of having you.

-Monster Island

3rd POV.
It had been a nightmare for y/n, who was bruised and breathing heavily. After fighting Mothra, who had killed the other kaiju. While he was away helping the humans, who were looking on from their ships and video screens. The wolf kaiju tried to bring her down, but Mothra was too strong and tough. With him doing his best against her, which in fact made Mothra even more crazy for him.
As the humans and y/n then saw her sport a crazed smile before shooting her silk at him. Which pining him against a mountain, before Mothra pounced onto y/n. And slammed her lips onto his as they began making out.
After separating her lips from y/n's and sighed with relief."It's just you and me now~" she said with a lustful smiled, while giggling like a mad woman. As she then tore off the y/n's clothes and her's, with Mothra lips at the sight of his big and now hard member. Before pouncing onto y/n and slambed her waist onto him. With the two moaning as Mothra continued to ride y/ n like a cowgirl.
All while the human's looked on while blushing, with several scientists doing so with fascination. As they then saw the two finish ten minutes later. With y/n doing so in Mothra, as the two moaned with pleasure. As Mothra looked down at a blushing y/n and smiled before she gave him one last kiss. As Mothra then rested and cuddled with him, "you're fully mine now. And we're gonna be awesome parents together~" she added. As y/n sighed at his new life with the very person who killed the other kaiju.
------------------------------------
Done