Show HN: hanaco Weather – A poetic weather SNS from the OS Yamato project

hanaco Weather is a minimalist social network where users post short, emotional weather thoughts and connect with others experiencing the same weather. No likes or followers (for now) — just gentle presence. Built entirely by a solo engineer, including the custom operating system it runs on: OS Yamato. What is OS Yamato? OS Yamato is a poetic, ephemerality-first operating system designed to let digital memories bloom and fade, like flowers in the wind. Features include: Diaries that bloom like seasonal flowers — and wither if forgotten Photos and videos that quietly disappear unless viewed again Chat with ambient seasonal effects and no pressure A soft, nature-inspired calendar with reusable schedule templates Wind Messages — time-delayed letters that arrive months later A 3D globe to see fleeting connections blossom around the world Each app within OS Yamato reflects a different way of embracing impermanence in the digital world. Learn more about the concept and philosophy: [YouTube – Write a diary, and a flower will bloom](https://youtu.be/JrqwU_N5WBA?si=kZQAadNdBGipk6gz https://youtu.be/JrqwU_N5WBA?si=kZQAadNdBGipk6gz) Try Hanaco Weather now: https://hanaco875.com https://hanaco875.com #ShowHN #HanacoWeather #OSYamato #solodev #minimalism #digitalpoetry #webapp #ephemeral