Yamete, oshiri ga itai's manga / #Omega X Alpha(2)

single parent who is dating this alpha guy sensei to where his son attends his schooling. Though happiness is being felt, he cant still feel unsatisfaction. Well there is also the feeling of family orientation which makes its plot brighter

Kuma is an Omega, one day, while fighting with Hachi his heat appears all of a sudden and when he tries to reach for his medicine he gets pushed down?