Den-O, and for way more than just it's humor. It had good plot, spectacular action scenes, inluding Giant Battles, a rarity for KR, great music that's as varied as the interesting and endearing characters. and very good use of time travel, that even explores its intricacies and has it's own spin on jsut what time is. Not to mention that it's extremely popular in Japan, more so than possibly any other Heisei series, and the only one to last this long after the TV series ended. Why I think that's it's a great starter is that it has so much variety that it appeals to a broader audience than usual