Arriva sulla Terra Ten, cugino di Lamù e piccolo oni in grado di fluttuare e sputare fiammate. Dato che tutte le ragazze lo ricoprono di attenzioni, Ataru prova invidia per il bambino e idea un piano per fare in modo che sia odiato da Sakura.

I professori del liceo Tomobiki decidono di usare il pugno di ferro per vietare agli studenti di uscire dalla scuola a comprare da mangiare. Nella seconda parte, Ten ordina la Pallina LoveLove™ che mostra l'anima gemella con cui ci si sposerà, ma quando le ragazze la provano non vedono chi si aspettavano.

Lum and Ran are friends, but one can best describe their relationship as prickly.

There is nothing suspicious about the lipstick Lum wants to put on Ataru. Nope, nothing suspicious at all. Later, Ataru’s class takes the dreaded Yaminabe food challenge!

Pro tip: never hurt an octopus’ feelings and never give an oni pickled plums.

Lum is quite the handful, no matter what size she is. Later, a shapeshifting fox takes a liking to Shinobu.

The finalists have different motives. Lum wants Ataru’s attention, Ran wants to get in Lum’s way, Shinobu and Sakura want the money, and Ryunosuke has something to prove.

Surely Ataru wouldn’t misuse bubble gum that has the power to create whatever he wants. But would that be worse than Lum losing the ability to speak other languages?

Ryunosuke grew up without a mother and wants to know more about her. Unfortunately, her father is keeping an important detail from her.

Lum has a new suitor, but it doesn’t take long before there’s trouble in paradise.

Life is full of unexpected events, like an extra lively kotatsu purchase and Lum believing she’s turning into a cow.

No good can come of Ataru and Ten switching bodies, nor using Lum’s shortcut to get to school on time.

Whether it’s an octopus or a girl burdened by regrets, spirits need assistance from the living. Unexpectedly, Mendo and Ataru find themselves navigating these burdens.

Whodunit? No one saw what happened to the principal despite all of them being in the same room. Later, chaos ensues when flowers start spreading rumors around town.

Ryunosuke and her father are now the proud owners of a seaside cafe and an island after paying a suspiciously cheap price! Later, a fairy asks Ten to find his missing parasol.

Nagisa needs a kiss from Ryunosuke to pass on, which is easier said than done. Later, Mark threatens his class with supplementary lessons if he catches them talking.

Ten must apologize for ruining Ataru’s scarf, but how? Later, candy hearts have the same effect as love potions. Meanwhile, the Dark Dominion lies on the horizon.

Lum is not happy when she learns she’s being forced into an arranged marriage thanks to her great grandfather.

Ataru and Mendo team up with Lum’s friends to save her from a forced marriage. But they aren’t the only ones who’re trying to stop the wedding.

What started as a misunderstanding ends in a falling out. Now Lum refuses to return until Ataru apologizes.

With the fate of the Earth on the line again, Lum and Ataru’s last game of tag begins.