Sono Toki Heart wa Nusumareta
1st - a thief prince and cheating slut 1.5th - an orphaned king and a pimp master 2nd - a bisexual congressman and gay secretary
Macaroni
I was so glad that Sydney did not end up with Robin. I would have hated this manga, if they did. Sydney's way too slutty for the innocent Robin, and he would definitely cheat on Robin with women (adulterer usually has low moral). I'd wished Sydney was Ted's uke though.
Jinjuu Houretsuden
Shoujo > Shounen Ai feel. Only Emperor × Fengyu was obviously an item, since they kissed, internally by the emperor. Other pairings gave more of a bromance feeling, even Touren x Lifang (totally the same vibe as Silver Diamond). Heck, Lord Long has a girl as his pairing! Crossover: http://www.mangago.me/read-manga/g_defend/
Koutetsu no Daitenshi
1. Koutetsu no Daitenshi 2. Datenshi ni Sasageru Uta 3. Doutei Saizensen 4. Bed no Shita no Himitsu
Rurouni Kenshin