To the Usual Days
With Kōshi and Momoko poisoned, they have to still battle Tenga Koganei in order to get the antidote, but the sun is close to setting, which means death for Kōshi and Momoko. Upon entering battle, Momoko finds that Tenga is much more powerful than she expected and before long the battle is all but over. When Momoko cannot fight any longer, Tenga gives the antidote to Kōshi, though there is only enough for one person. Right before the sun sets, Kōshi gives Momoko the antidote, and after she awakens to find Kōshi dead, unleashes her ultimate fury on Tenga, and wins the battle. Afterwards, it is found that Kōshi was miraculously healed due to a martial arts technique his mother had performed on him when he was young. Everyone goes back to living their "normal" lives.
Aired 16/03/2007EP 22 - To the Usual Days

Sumomomo Momomo: Chijou Saikyou no Yome
Koushi Inuzuka is a smart high school student who aims to become a public prosecutor. Unfortunately for our good guy, he was born into a martial arts family whose head (ie his father) only knows one language: violence. When Koushi was still a baby, his father made a pact with his biggest rival to marry Koushi to his opponent-turned-friend's daughter. The union of the two blood lines is supposed to bring forth Earth's strongest martial arts clan.
Skip forward: Koushi is in high school, oblivious to the marriage arranged for him at his birth. Enter Momoko Kuzuryuu: sugar bomb, airhead, loli martial arts artist and Koushi's self-proclaimed bride (the strongest on Earth, no less). Her wish for sexual intercourse meets with Koushi's square refusal as he has absolutely no desire to get it on with someone who looks like she could be his little sister, not to mention that he doesn't have the foggiest idea who she actually is.
Meanwhile, a war has broken out between the martial arts families. For Koushi, this means that numerous fighters are out to challenge/assassinate him. As if that weren't bad enough, our protagonist also has a fight phobia due to a traumatic incident that took place in his childhood. Now it's up to Momoko and her superhuman fighting skills to protect her "husband." Will the two sweethearts survive the trials and tribulations ahead of them? More importantly, will Momoko get her way receiving a baby from Koushi?
(Source: Kotonoha)