Responses
All of that was introduced in the first story Master Please Leave a Mark
Basically androids exist and they have humanization levels. Depending on how "human" you want the android you can adjust. Some serve as lovers and some serve like bodyguard or anything else really. None can reach 100% humanization levels (except the ml in the first story)

Guys I'm on ch 14
Why do I feel like I've missed between the chapters ...
There is no introduction about android system , like they just introduced one android directly
I feel ive missed something or I'm just stupid or I was reading it absent minded