Momoko is the only child of the Kuzuryuu clan, a powerful martial arts family with inhuman strength. But strong as she is, her father fears a woman will never be able to master the skills of the family. Unless Momoko marries and bears a capable heir, the Kuzuryuu line is doomed to weaken and die off! With this mission in mind, Momoko is sent to the rival Inuzuka clan, where she is to marry the son of their mighty leader. But Koushi Inuzuka abandoned the martial arts long ago. Now committed to his legal studies, the last thing Koushi has on his mind is marriage-especially not to the world's strongest bride!

With the reconstruction complete, Koushi begins his training at the brand-new Inuzuka dojo. But despite his recent change of heart, he is still unable to master his family's extreme martial arts techniques. Confessing his true weakness to his friends, Koushi begs them to help him with his training. But if Koushi thought the Inuzuka training techniques were over the top, his friends' methods might push him over the edge!

!--StartFragment--Little brother Tenchi has gained the upper hand in the deadly gladiatorial soccer match. Tenka braces himself for the final blow, ashamed at his own weakness. But the cowardly tiger has not yet conceded the match. Just because he's failed to win the heart of the girl he loves doesn't mean he's about to let her die! Will Tenka's strength be enough to topple the Koganei prodigy? And how will his comrades fare as the tournament for Momoko and Koushi's survival continues?!!--EndFragment--

Eager to prove his strength to his fiancée, Hikaru challenges Koushi to a duel. Touched by his heartfelt display, Momoko stands down, leaving Koushi to face the charge alone! But the class rep can't let Koushi come to harm because of her secret affection. Donning the guise of the Heavenly Warrior Horse Mask and swallowing her pride, Sanae unleashes her hidden power at last!

Koushi moves into the Nakajima apartments, his father's reprimand still ringing in his ears. Though he is less than thrilled with the idea of becoming a martial artist, Koushi realizes he can't stay indifferent for long. The Koganei clan is already on the prowl, and a well-aimed poison ping-pong ball catches Koushi off guard. As the slow-working poison takes its toll, Koushi despairs. No amount of training can save him now...but perhaps the Strongest Bride on Earth can?

Depressed over the slow progress of his training, Koushi spends the day with Sanae to take a break from the world of martial arts, if only for an afternoon. Momoko is worried when she sees her fiancé in the company of another woman, but her concern turns to outright desperation when Koushi attends a summer festival with Iroha at his side. Can Koushi's circle of friends convince him to return to his bride...and to his training?

Koushi and Yuusuke square off in a battle that will determine the next leader of the Eastern army and the future of all martial artists! Though Koushi's recent training has equipped him to dodge Yuusuke's fierce attacks, it will not be enough to win the fight. The only hope Koushi has of defeating such an experienced combatant is to unleash the Myriad Seal. In the heat of battle, will Koushi be able to call upon his true power to defend his clan...and his bride?! The fate of Koushi and his friends will be decided in the final volume of Sumomomo, Momomo!

The upcoming school athletics festival is the perfect opportunity to test the results of Koushi's physical training. But with two tickets to Death Ninja Land on the line, the competition is fierce, as every man in the school strives to win the ultimate date! Unfortunately even Koushi's best efforts leave him miles behind the powerful Yuusuke Endou. Is this the Monkey Clan's chance to woo Momoko away from her weakling fiancé?!

With three of the four antidote compounds in hand, Momoko and Koushi move on to face their most fearsome opponent yet - Tenga Koganei! As the poison creeps ever closer to her heart, Momoko falls to the fierce leader of the Tiger Clan. Recognizing that there is little glory in defeating a weakened warrior, Tenga willingly hands over the final ingredient of the concoction that will save Koushi and Momoko. But there's a catch: There is only enough antidote to save one of them!

Before Koushi can become a fit leader for the Western Army, he must first become king of the jungle! Taking his cues from the forest natives, Koushi is able to make great strides in his training. But back at home, things are not going so well. Those martial artists who wish to reclaim the might of their ancestors have set in motion their plans to ignite war among the clans. Can Koushi's friends keep the peace until their champion returns?!