No it's not. Stop messing with the tags.
Tag Rules:
Harem [1 person being courted by at least 3 others, all engaging in consensual sex simultaneously.]
The MC can be "engaging in consensual sex" with Katie, Monica, Jenna, Bella, Jolina, Zarah, Lily, Debbie, Angel, Natasha, and Wanda, and is "being courted" by Katie, Monica, Jenna, Bella, Elaine, Jolina, Zarah, Lily, Angel, and Theresa.
Are you saying that your own tag rules are wrong? Or does that "1 person" not refer to the MC?
Also, there's a 4some planned for this game, so that will then be 3 of the "consensual sex" partners engaging in "sex simultaneously" so the tag will have to come back later anyway.