Birdy

Cowboy Bebop

Dragonball

Flame of Recca

Gundam Wing

Hunter x Hunter

Inuyasha

Mononoke Hime

Oddments

Outlaw Star

Ranma 1/2

Rurouni Kenshin

Trigun

Yuu Yuu Hakusho

Hello sailor!
Duo chatting up his invisible friend.

I like Duo's pose and body language in this cel, it seems to capture his lively personality.
 
Added: 1/2/23 From: Celga apple_symphony_xx
 
Hello sailor!