Ogata Seiji, Hikaru no Go - Hanamoto Shuuji, Honey and Clover
Hanamoto is at the onsen with the students, Ogata is there on his own. Late at night, Ogata chats up Hanamoto in the bath. Ogata invites Hanamoto back to his room to drink and seduces him in classic BL style. They have copious amounts of really filthy sex with much spilling of precious bodily fluids, then sit around smoking silently while sad shoujo music plays. Then Ashiwara shows up.
Zechs Marquise, Gundam Wing - Kuroyanagi Ryou, Yakitate!! Japan
Zechs comes into the Pantasia Main Branch store to buy a loaf of bread.
Kuroyanagi: Meister Kirisaki!
Zechs: Uh, no.
Kuroyanagi: Don't try to deny it, just because you have a different mask on today. I'd know your entrancing, er, long blond hair anywhere.
Zechs: I just came in for a loaf of bread.
Kuroyanagi: I made this especially for you!
He shoves a piece of bread into Zechs's mouth. When Zechs tastes it, he has a vision of being pulled under water by a strong current, buffeted by waves, rushed down a waterfall, then washed up naked on the shore, gently licked by the tide. He opens his eyes to find himself being gently licked by Kuroyanagi. Things go badly for Kuroyanagi after that.
(We could do pages and pages on Okiayu's characters. Possibly about most of them getting therapy.)
Mitsui Hisashi, Slam Dunk - Tezuka Kunimitsu, Prince of Tennis - Kuchiki Byakuya, Bleach
Mitsui is beating up Tezuka just for the hell of it. Tezuka can't fight back because he injured his back while
Tezuka Shinobu, Koko wa Greenwood - Ludwig, Meine Liebe
Both obtain influential positions, Ludwig in government, Shinobu in business. Their interests are in conflict and they play a delicate and dangerous game, using minions, money, and Machiavelli to try to ruin and assasinate each other. At the same time, they conduct a discreet affair. They are distant and cold with one another, but the sex is really, really good.
Atobe Keigo, Prince of Tennis - Greed, Fullmetal Alchemist
I don't know what happens. I'm feeling faint at the idea of them just being in the same room. Probably Atobe admires himself a lot and then Greed eats him.
Got any good ones?