I'm looking for yaoi and/or shounen-ai manga where the uke has something inside of him like a demon or where the uke goes on a violent rampage when he's in a certain situation. Whatever it is, the uke goes beserk and the seme is the only one who can calm him down and/or save him.

Some examples could be like Crimson Spell or Wild Fangs.

Thank you!

BrandNewWings

This sorta happens in Mori no Koe, first two stories.

Concrete Garden - seme though, not uke. First story.

And while this isn't BL, since it fits really well otherwise, I recommend From Far Away.

I'm also interested to find such stories, so I'll be following this thread! 🙂

Well, I know one but there seme goes berserk and uke calms him down. It's Madness

Madness is perfect!

Also another example could be Saiyuki with Sanzo and Goku.

BrandNewWings