Ok so when Sidonia obtained a placenta that took the form of Hoshijiro, Tanikaze would visit that placenta every day he had the chance to.
Then Tsumugi -hybrid appears and he seems to conveniently forget all about Hoshijiro, now in this film he falls in love with this hybrid creature, like sorry but it's too much for me to see a human and an alien hybrid with tentacles fall in love. (the kiss was creepy). The most interesting thing in the series was Hoshijiro anyway and they also could have done more with the Gauna that had her memories.
Poor Hoshijiro has the worst fate I've seen an anime character have (apart from Asuka maybe), she's just an incubator and a DNA pool for clones. It really really annoys me, the manga artist could have fixed this or at least the film could have had an alternate story line to fix that.
Then Tsumugi -hybrid appears and he seems to conveniently forget all about Hoshijiro, now in this film he falls in love with this hybrid creature, like sorry but it's too much for me to see a human and an alien hybrid with tentacles fall in love. (the kiss was creepy). The most interesting thing in the series was Hoshijiro anyway and they also could have done more with the Gauna that had her memories.
Poor Hoshijiro has the worst fate I've seen an anime character have (apart from Asuka maybe), she's just an incubator and a DNA pool for clones. It really really annoys me, the manga artist could have fixed this or at least the film could have had an alternate story line to fix that.