Is it just me or did Mina Lie/hide some truth when Takuma asked her why did she use all the frozen seafood? (it's obvious she used it all because it thawed due to them being lost for some time)
Loser childhood friend heroine is apparently a trope in Japan, here are a couple examples:
https://mangadex.org/title/53349/make-heroine-wo-katasetai
https://mangadex.org/title/44510/the-story-of-a-losing-heroine-doing-her-best-to-win
Even an Isekai...
Kihara is just a mediocre idiot who needs good guidance. But Tarabuchi is totally fucked, even when the system is partly liable of his inability of accomplish anything, he also fucked his own career always playing the as the bottom feeder with no real attempts to improve himself.