enigma x alpha

Try these
https://www.mangago.zone/read-manga/falling_alpha_enigma_the_fourth_bath/ The original concept

These are betas becoming omega aka recessive omega
https://www.mangago.zone/read-manga/kyou_kara_omega_ni_narimashita/

https://www.mangago.zone/read-manga/willow_love_story/

https://www.mangago.zone/read-manga/butler_nabit/

https://www.mangago.zone/read-manga/gold_gray/

https://www.mangago.zone/read-manga/peach_musk/

https://www.mangago.zone/read-manga/pheromone_baby/

These are alpha turned omega (check comments for warnings)
https://www.mangago.zone/read-manga/clinical_trial/

https://www.mangago.zone/read-manga/unfinished_relationship/

https://www.mangago.zone/read-manga/into_the_rose_garden/

https://www.mangago.zone/read-manga/lima_syndrome/

https://www.mangago.zone/read-manga/omega_bite/