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Aoi's future partner was shown in Vol 4 extra, but he himself wasnt introduced until volume 5. It's called Tsuchiya and Shibata.
Noa is Shizuku's best friend (female omega), who sort of had a crush on her but eventually backed off after learning that Shizuku likes Daiki in wholesome middleschool love triangle way lmao
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I'm pretty sure they're referring to this extra
https://www.mangago.zone/read-manga/kiraide_isasete/uu/to_v-4-chapter-4/pg-31/
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Me too. Aoi wasn't even born when this was published, and it was published separately in some anthology. The uploader added it later (I think after the vol 5 was published)
I think the people who started reading the manga later (after volume 5) knew about it, but people who have been following since earlier (who had no reason to go back and re-read) missed it.
I have been reading this series since Naoto was still a single mom and Shizuku was an only child lmao. I sat down and re-read the earlier volumes yesterday to see if I had missed any other easter eggs.
Since we have seen Aoi's future partner (vol 4, ch 1 extra) and Shizuku and Daiki are pretty much set, I wonder if Noa and Minato are another pairing. Minato spends a lot of time around Shizuku's friends, so it makes sense that he might end up with one of them when they grow up.