No, it isn't. Which you'd know if you were fucking capable of reading.
In fact, I would love it if the author stated that the MC is bisexual. That would be, you, know, exactly what I've been asking for the entire time. Which, you know, you'd know if you were fucking capable of reading.
Literally the only problem I have ever had with this game the is heavy implication in the description that the MC's orientation is selectable, which is not true. I do not care what the MC's orientation is. I just want it to be made clear that it isn't selectable, or at the very least not heavily implied that it is.