I wonder what it would be like to marry Katsuhiko Tsukioka 

Katsuhiko Tsukioka 

Alias: Tsunan, Katsu (by Sano).

Looks: Good. I gotta admit I'm a sucker for that long, flowing, jet-black hair reminding me of Mitsui Hisashi (Slam Dunk). Katsu has a quite pale complexion, finely built body, and dark brown eyes. His expression is usually serious, or with a smart smirk planted in his lips.

Brains: Higher than Sano in the area of planning and plots. And way a whiz in the field of painting and explosives.

Personality: A loner, mostly after the doom of the Sekihoutai, and particularly the tragic death of his idol, Sagara-kanchou. Opens only towards Sanosuke, his best friend, and sometimes with Kenshin-gumi too. Katsu-kun can be particularly obsessive and rancorous, but you know he had a good reason for it. There isn't many info on Katsu, so I can't say much more...

Fighting skills: I haven't seen him doing hand-to-hand fighting, but with Sano being good at it, Katsu puts surprise factor and his abilities in explosives use. Katsu can compare to Minnie May from Gunsmith Cats. He makes and usually has from tiny plastique compartments to smoke grenades. Of course he knows how to use 'em VERY well.

Special abilities: Count his skill at painting here. Sanosuke found him after years, seeing in a store a kinda pretty paint done by Katsu, representing Sagara-kanchou and themselves.

Competition: None romantic, really, though some djka insinuate something with Tae. The greatest obstacle may be his tendency to alienate himself. Sanosuke will prove to be an intresting ally here, though keep him in line as he's a hopeless meddler.

In-Laws: Parents and the Sekihoutai guys are all dead, so count here Katsu's sworn brother, Sagara (or Higashidane?) Sanosuke. While basically a great guy to have at hand, I'm willing to bet he can be the little-great imp and toy around if only to annoy you and Katsu playfully, like he does with the K&K.

Finances: I heard he works in a newspaper aside of his "workouts" with the bombs and the paints (which were pretty well-sold and popular), so you both can get by normally.

Sex: He has been lonely most of his life, and if you managed to bond with him, he'll be devoted to you, including this delicate area. Once you're ready with this, Katsu is likely to give everything he has (starting with his quite nice body), becoming a very engaging lover.

Overall: It won't be easy, I tell you. Though more cool-headed than Sanosuke, Katsu prefers to get by himself. But he's definitely worth getting to know better.