Sexual Orientation Discovery

A character is subjected to consensual approaches that over the course of the VN makes them discover a new sexual orientation.

The usual case involves a gay character approaching a straight person, and seducing or manipulating them (without using outright illegal techniques) into becoming gay.

The reverse scenario of a gay character being on a receiving end of a straight seducer and being "straightened out" is also possible, but much rarer in fiction due to the negative real world connotations.

Sometimes the change is not full, and the character becomes bisexual, instead of completely changing their orientation.