No. Published in a shounen magazine, so it's shounen.

Evangelion is now legit because it moved to a genuine Seinen magazine (Young Ace) not many years ago, FLCL was removed from the list ever since but I've put it back because the manga ran in a Seinen magazine (Magazine Z), CodeGeass is for anime only due its very late time slot in Japan and the suggestive scenes, the manga adaptations are all Shonen and some Shoujo.

Doesn't qualify, me who made the disclaimer in the description warned that the anime must have a late time slot, glaring mature imagery of its own, and if its based from a Shonen work the adaptation must be way more mature than the original, and I mean way more; taking violence as an example: the original had splashes of blood while the adaptation had Ludicrous Gibs and Gorn Up To Eleven, a perfect example of this is Violence Jack.

I know Shakugan No Shana very well, the light novels even as I'm the one who made most of Yuji's spoiler entries, so I'm removing Shana from the Seinen entry, it doesn't fit here at all.