Five siblings...Dang i know it's japan but seems like it'd be a crowded household even if it isn't too pricey to take care of that many children
(interesting no tragedy tag that'd make me think no one cared about the sibling who died just from seeing the entry before reading, if not the plot twist of 'sibling/narrator telling the story is the one who died')
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So...did gin die holding a grudge against everyone? If anything you'd think itd be the mc as the one with a 'diff father'
https://mangadex.org/title/ec67a4c6-9fa6-4fad-98bb-d37ae6df6a37/tamawari-no-tsuki says it has 31 chapters idk if spiraphobia is gonna pick it up til they finish another series tho