If you're looking for anime similar to Squishy! Black Clover, you might like these titles.
Whenever Keiichi is away, it's time for Belldandy, Skuld, and Urd to play. Follow the Adventures of the Goddesses as they shrink down and have fun with their Rat sidekick, Gan-chan. Be it battling Gan-zilla or kitchen appliance romance, the Mini-Goddesses are there to have a good time.
Get ready for a strange but fun-filled adventure with your favorite group of assassins. The killer class is back but this time they’ve got…magic?! In this brand new spin-off series, follow the chibis of Class 3-E as they learn swordsmanship and sorcery at Kunugigaoka Magic School. Their mission? Defeat the evil Demon King Koro Sensei and face the trials and perils of their magical school!