I'm looking for a manga where the seme doesn't believe the uke's feeling so the seme told the uke to jump off the building or I think to die to prove that he loves the seme. So the uke jumps off the building. THANK YOU

Is there anything else you can remember, such as which categories it could fall into or what other genres does it belong to?

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There's a jumping out of the window scene in Heat by Miyamoto Kano http://www.mangaupdates.com/series.html?id=5599

Denkou Sekka Boys

THANK YOU VERY MUCH "Denkou Sekka Boys" IS THE ONE.