My prediction

Celebrate_love December 6, 2020 9:08 am

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The reason why, I think, Asashi gets sullen when they use the word 'defective' is because he once suffered emotionally for not being able to impregnate his wife. She left him after she got pregnant with another guy, even though they slept together only once. In an earlier chapter, Asashi talked about how he felt guilty for not giving her the happiness of motherhood. He considered himself 'defective'
So, this is why it triggers him every time they call the wood for his project 'defective'.

Responses
    Zap December 5, 2020 8:57 pm

    fudge. that hurts ╥﹏╥

    min_nad December 6, 2020 12:41 am

    Same thought here

    Frostycock December 6, 2020 8:14 am

    This also goes back to his father in one of the earlier chapters chapter 4 of vol 2 asahi is holding kousei his younger brother quite close as his mother and father are fighting and yelling about how their fathers legs don’t work and how he’s using all of the money the mother makes to buy booze. One of the words she uses is defective, that she doesn’t want to be with a defective man, this word overall just seems to strike asahi in the heart as he doesn’t relate it to good memories that he has.

    Celebrate_love December 6, 2020 9:07 am
    This also goes back to his father in one of the earlier chapters chapter 4 of vol 2 asahi is holding kousei his younger brother quite close as his mother and father are fighting and yelling about how their fath... Frostycock

    Yes! And that is why he is so determined to make this project work. To kind of prove that defective is not bad or worthless. Maybe he wants to succeed to feel more secure as Masato's partner.

    RecessiveGene December 6, 2020 6:21 pm

    oh true. not only that, the long haired guy was trying to pinpoint how asahi dated masato because he will no longer have baby stuff problems, because he’s a man. and will masato still love him if he’s just a convenient lover, honestly I feel bad for masato, he’s always kept in the dark. but i think asahi do loved masato, he just needs to fix his past trauma from his cheating ass wife

    Celebrate_love December 6, 2020 8:05 pm
    oh true. not only that, the long haired guy was trying to pinpoint how asahi dated masato because he will no longer have baby stuff problems, because he’s a man. and will masato still love him if he’s just ... RecessiveGene

    Completely agreed.

    miyumira December 10, 2020 3:42 pm

    Im lookin for this kind of answer bcz im so curiousn. No wonder Asahi wanted to look as "great" and "good" person as he can, bcz he doesnt want to lose another precious person again :"(