Re-read it for the fourth time and I think that I finally got it.
I think the straight person Takemiya Jin mentioned in the afterwords is Yui. She is the only one with an exclusive interest in the opposite sex. Yet her love for Takako becomes more and more intense as they live together. But there was never any mention of sexual desire on Takako from Yui. Even touching is a no. Takako is gay and has both sexual and romantic interest in Yui all along. Yui is straight, and knowing that,Takako would never forced the issue. Yui's feeling for Takako is pure love.
I think in the very last chapters of the manga they finally sleep together. At one point Yui also almost spilled the beans to Mika about sex. So at that point they have done it. But it shows how slow and long it will take Yui to be ready. But Yui is still straight. She has no interest in another woman, because of Takako's love and what she had done to Takako when she attacked Takako. Thus it is also a penance. The "who would I even marry?" answer of Yui to Takako is also another clue.
Yui is an example of how to purely love a person, So a relationship between a gay and straight person can happen, it is just not that simple. Both sides have to know their own and their partners limits. Boundaries are keys.
last edited at Apr 12, 2026 7:26AM