I pretty much adored I"s manga and its anime production, and have also enjoyed manga series such as Ichigo 100% as well as Hatsukoi Limited as well, the genre of these mangas are under the same category like I"s, categorised under ecchi/romance/harem. I think you will enjoy these mangas as well, in fact if you ask me in the manga Ichigo 100%, the main girls (Aya Toujou and Tsukasa Nishino) that the protagonist likes actually pretty much resembles the 2 main girls (Iori Yoshizuki and Itsuki Akiba) involved with Ichitaka-kun in manga I"s, so initially you might sense some de-javu here and there when you first read this series, but in terms of story-plot and character development, I would say Ichigo 100% is alittle bit richer and more satisfying if you ask me personally.
Nevertheless, I believe you will enjoy Ichigo 100% and Hatsukoi Limited same as me, if you enjoyed reading I"s. Hope u like my suggestion.
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