>>52980300NTA but the only time I can remember seeing Japanese fandom freak out over a same sex ship was when Yuri on Ice aired, because it wasn't advertised as BL before the main couple became canon. Same gender couples existing outside of BL and GL labeled media is that taboo.
But there are other Japanese Nintendo games that have gay characters or romance options now, so nothing is impossible. I feel like Clavell with my expectations of allowed gayness in media being terribly out of date.