A/B/O with crossover between Miraculous Ladybug and My hero academia. Omega Jasmine is on a field trip with her classmates, while inside a mountain where they were told to be careful, she is pushed by some classmates who were tricked by Lila into a tunnel that takes her deep under the mountain... Where she discovers creatures that were claimed fairytales. What happens when a demon king likes her and desires her as his mate and queen?
25 parts