High school DXD. Most Gundam series uf you like Mecha. Star Blazers 2199. Rising of the shield hero. High school of the dead. Sengoku basara. Sword art online. Legend of the galactic hero's. Shimoneta a boring world where the concept of dirty jokes doesn't exist. And any anime that has "another world" in the title are usually good as well. There's loads better than this list.