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I just remembered my relative. I think that's the problem when you love your partner more than you child (ren). If you lose your partner, you become hurt and anxious that you impose your feelings on you child (ren). Sometimes to the extent of letting your child (ren) feel alone 'cause you just want to escape from the pain of losing your love.
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Middle school Taiga has some real fucked up logic and I didn't know where did that come from.
Kaoru could've straight up mark Yuka if it was just to keep the others from touching him, why the penetration? Tho it still isn't right to mark him without consent.
I still like it tho, they've changed and learned. People don't always make moral choices and they're not born and be automatically real good people.
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I agree that uke did not groom the seme because he did not have the intention to have a romantic relationship with him when he adopted him; it is not entirely incest since they are not blood related. But what made this feel like kinda incest is that uke literally saw seme as his child/nephew, like overtime he disregarded that their not blood related and treated him like a real family, like a real son. Then, the woman pointed out they can be a couple and then seme confessed which made him concious of the situation. Since he treated him like his real son, it's like developing romantic feelings for your real son, but they're not really related by blood, so he thought maybe it was okay.
What 'it'll be thrilling'? Does he like adultery so much?