High School DxD BorN

Similarities: 1.Harem, ecchi 2.Similar art 3.Fighting bad guys 4.Demon kings/Demonic creatures 5.Main girls [ Rias Gremory & Mio Naruse ] are similar in their appearance/ both are Demon Kings daughters....  

Both are very similar. The protagonists look almost identical. The main female is a devil. There are Angels, Demons, and a 'Hero' faction. Both are harems, both revolve around the female lead's heir-to-leadership status. There are minor plot differences, but the jist is very similar. There are, however, two main differences. Testament to the New Sister Devil is basically HSDXD on steroids. The ecchi, if the original, non crunchyroll version, is watched, is FAR more extreme. Every girl has their own body part they're stimulated through, and it's a very large point of the show. The sexual scenes are far more egregious. However, it makes up for it in far better (imo) combat. The 'spells' are less flashy, but the regular combat is much better. The other differences is in protag backstories. To avoid spoilers, HSDXD's Issei is a much more from-zero-to-hero style, while Basara from Testament is much more realistic in why he's so strong. All in all, most people will have watched HighSchool DXD before they'd have watched Testament, but if you liked one, you'll likely like the other. One is more ecchi and serious, while the other is more parody and story-based. read more