https://i.imgur.com/pUStG2j.png
https://i.imgur.com/1Q7FTcq.png
https://i.imgur.com/FOLFPEB.png
https://i.imgur.com/Va2QPbo.png
https://i.imgur.com/kzoRkN1.png
https://i.imgur.com/SGq7tvi.png
30くらいから始まるこの現象なに?