There are no cracks, but there are stains as shown in the image. I don't think the ink can be replaced. I can't see the remaining ink, but I think it will still write for a while. I'm letting it go because I've graduated from Natsume's Book of Friends. ⬛︎Product⬛︎ Natsume's Book of Friends Ballpoint Pen Nyanko-sensei ⬛︎Color⬛︎ Ink color → Black ⬛︎Packaging⬛︎ OPP bag + bubble wrap #NatsumeYujinCho #NyankoSensei #Stationery #MyFavoriteColor #PinkCommunity #YukiMidorikawa #KazuhikoInoue #CatGoods