What is the plot?

The episode opens in Tomobiki High School's faculty room, where Onsen explains that students have been repeatedly leaving campus at lunchtime to buy snacks from nearby shops. The teachers agree that this has gone too far, and they decide that any student caught buying food off campus during lunch will be severely punished.

The new rule is put into effect at lunchtime, and both sides prepare for a confrontation. Students who want to keep their right to go off campus for snacks gather with the intention of breaking the ban, while faculty members position themselves to stop them at the moment lunch begins.

When the lunch bell rings, the students make their move toward the school gates and the surrounding shopping area, but the teachers immediately spring their trap. The faculty and the student side clash in a full-scale chase and scuffle through the area around the school and the nearby shopping street, turning a simple lunch rule into an all-out "off-campus snack battle."

Ataru ends up leading the student resistance, driving the conflict forward with his usual reckless enthusiasm. The struggle escalates from a schoolyard confrontation into a broader fight across the shopping district, with students and teachers darting through stores and streets as each side tries to outmaneuver the other and secure snacks or capture violators.

The episode then shifts to a quieter scene in a cafe, where Ten is spending time with Lum, Shinobu, Sakura, and Ran. The girls spoil him by feeding him desserts, and Ten clearly enjoys the attention as the others fuss over him. Outside, Ataru watches the group and wonders why Ten is suddenly so popular with all of them.

Inside the cafe, the conversation turns to Sakura's personal life, and Ran learns that Sakura has a fiancé named Tsubame. Ten becomes skeptical that Sakura and Tsubame are truly well matched, and this leads him to use a device connected to the galactic shopping network that advertises a "Lovey-Dovey Crystal Ball," a gadget that supposedly reveals a person's destined lover with 1000% accuracy.

Ten tries to get Sakura to use the crystal ball first, but she refuses despite his insistence. He then turns to Lum, and she reluctantly looks into it. The ball reveals Rei as Lum's destined match, shocking her.

The device continues to affect the others as well, and the results quickly become disastrous once the women begin using it. The crystal ball's predictions create confusion and emotional upheaval among Lum, Sakura, Shinobu, and Ran as each learns or is confronted with an unexpected supposed "destined" partner, sending the group into chaos rather than romance.

As the episode ends, the crystal-ball fallout has replaced the earlier snack dispute as the main source of disorder, leaving the characters caught up in the consequences of Ten's purchase and the strange, destructive results of the gadget's claims.

What is the ending?

In the ending of the episode, the off-campus snack battle is still unresolved, with students and teachers left battered and the conflict continuing into another day. In the second half, Ten learns too late that the crystal ball he bought was the wrong one, and the chaos in the café explodes before the real item can help.

The ending unfolds in two parts.

In the first part, the fight over off-campus snacking has become a full-scale street battle. The teachers, backed by Mendo, have tried to stop the students from buying snacks outside school, but the students keep pushing back. By the time the day ends, bodies are scattered across the streets, and the surviving fighters are still stubbornly declaring that they will keep going tomorrow. The episode leaves the conflict physically exhausted but not settled.

In the second part, the scene shifts to a café where Ten is being spoiled with attention by Lum, Shinobu, Sakura, and Ran. Ataru sits nearby, irritated that everyone is fussing over Ten instead of paying attention to him. The conversation turns to Sakura's fiancé, Tsubame, and Ten, after hearing about the engagement, decides to buy her a crystal ball advertised as revealing one's destined lover. Sakura refuses to use it at first, dismissing it as junk, so Shinobu tries it, then Lum, then Ran. Each reaction is uneasy and troubled, because what the ball shows is not simple or comforting.

The results create immediate upheaval. Shinobu reveals that the person shown to her is Tsubame. Lum learns that her destined match is Rei. Ran sees Ataru. When Sakura finally looks, she is shocked to see Ataru and Mendo tied to her fate as well. The table turns into confusion and anger as the characters react to what they have seen. Ataru, Mendo, and Tsubame end up crawling under the table, and Sakura spots them and knocks them out. The café fills with argument and chaos as everyone reacts to the crystal ball's claims.

Meanwhile, Ten slips away and checks his device, where he learns the item he ordered was not the true "Lovey-Dovey Crystal Ball" but a "Trouble Couple Crystal Ball" instead. The real product is then sent to him, but by the time it arrives, the damage is already done. Ten looks at the chaos and complains that it is too late to fix anything. In the end, Ten is left with regret, the café group is still caught in confusion and conflict, and the off-campus snack war remains unresolved.

Is there a post-credit scene?

Yes. The episode has a post-credits scene in which Ten watches a galactic shopping network advertisement for a new product called Fantasy Gum.

The scene is brief and functions like a teaser: it shows Ten seated and focused on the commercial, continuing the show's running gag of bizarre in-universe mail-order gadgets. A fan discussion also notes that this post-credits moment was meant to tease a later Fantasy Bubble Gum-type chapter adaptation, though that interpretation is not part of the episode's explicit content.

How does Mendo help the Tomobiki High teachers crack down on off-campus snacking in “The Great Off-Campus Snack Battle”?

In the first segment, the teachers launch a coordinated effort to stop students from leaving campus for snacks, and Mendo becomes involved in that crackdown.

What happens when students try to sneak off campus to buy snacks in episode 13’s school-battle segment?

The episode centers on a battle between Tomobiki School students and faculty over the students enjoying snacks off campus, with the teachers trying earnestly to prevent it.

What gift does Ten buy in “A Gift from Ten,” and who is it for?

Ten buys a gift for Sakura after hearing about her fiancé, and the Apple TV description specifically identifies the present as something Ten purchases for her.

Which characters use Ten’s Lovey-Dovey Crystal Ball in episode 13, and what happens with it?

Ten buys a Lovey-Dovey Crystal Ball that is said to reveal a destined lover with 1000% accuracy, and Lum, Sakura, Shinobu, and Ran all use it with disastrous results.

How does Ten’s gift for Sakura lead to conflict among the main cast in episode 13?

Ten's decision to buy Sakura a gift after learning about her fiancé triggers the second segment's character-driven chaos, with the gift and the crystal-ball gag pulling multiple main characters into the trouble.

Is this family friendly?

Not really. It is generally a light comedy, but this episode can still be awkward or mildly upsetting for younger children or sensitive viewers because it includes slapstick conflict, school authority vs. students tension, and a romantic-matchup gag that can lead to embarrassing or emotionally uncomfortable moments.

Potentially objectionable or upsetting aspects: - Physical comedy and rough chaos: the episode centers on a battle between students and teachers, so expect exaggerated chase-and-collision style humor rather than realistic violence. - Romantic/relationship teasing: one segment involves a gift tied to a fiancé/romance premise, which may include awkward or suggestive comedic misunderstandings. - Occasional sexualized anime humor: the series is known for brief nudity or swimsuit-related fanservice in some episodes, though the specific episode listings here do not detail exact scenes for this installment. - Mild language in some translations: subtitled versions of the series have been noted to include occasional mild profanity.

If you want, I can also give you a simple "kid-friendliness" rating like "safe for most kids / better for teens / not ideal for young children."