
Sexual grooming is the action or behavior used to establish an emotional connection with a minor, and sometimes the child's family,[1] to lower the child's inhibitions with the objective of sexual abuse.[2][3] It can occur in various settings, including online, in person, and through other means of communication.[4] Children who are groomed may experience mental health issues, including "anxiety, depression, post-traumatic stress, and suicidal thoughts." - WIkipedia
Mc was raised by Ml from when he was still a kid until age 20. Ml has romantic and sexual desires for Mc. He installs video cameras of mc, displays possesiveness and unwillingness for Mc to date others, etc. And Mc has a severe dependency on ML, going tot he point of unaliving himself.
It is self explanatory that this is grooming. It doesn't matter that Mc is NOW 20. What matters is that Ml's behavior started before Mc became legal age.
wait isn't the uke 20?