Tumbitri Meri! I found them on amazon. By far my favorite bullet journal and I’ve tried many. Ghosting is absolutely my worst pet peeve and this one is 160 GSM with absolutely no ghosting or bleeding. I love it.

https://www.amazon.com/gp/aw/d/B07Z3QLRL1?psc=1&ref=ppx_pop_mob_b_asin_title