The "show unread posts" link is useful, but it's the most recently updated topics, so a mix of old and new threads.
I had a quick look and found that adding
;sort=first_post;desc
sorts by the most recently created thread:
https://theperfectboobs.net/index.php?action=unread;all;sort=first_post;descHope it's useful to someone else to see what new (not just updated) topics there are