Neither party is 'straight' at the start of the manga. Not that I can't enjoy the trope of the 'straight' guy turning gay for his special person. Unlikely, but can be fun to read. Plenty of people are bi/pan/etc but refuse or choose not to identify as anything other than straight, but that's not the trope.
Includes:
-Both parties identify as gay/bi/pan/etc from the start -One identifies as above and other is unsure/questioning (usually young) -Both parties unsure/questioning at start.
