Hikaru becomes jealous of Haruhi's middle school friend, Arai, after learning that Haruhi's classmate used to have a crush on her. Kaoru wants to make up for Hikaru's rude behaviour, so he offers to take Haruhi out on a date. Kaoru pretends to be sick for the date and has Hikaru go instead. He does so because he believes that Hikaru is interested in Haruhi but, being clumsy in genuine social situations, doesn't know how to act properly and hopes Haruhi can help him learn how to think of others first. During their date, Hikaru runs off due to another encounter with Arai, and a thunderstorm occurs. Worried about Haruhi, Tamaki calls Hikaru, accuses him of selfishness, and tells him that Haruhi is afraid of thunder, accidentally revealing Haruhi's weakness. Acknowledging Tamaki's words, Hikaru sets off to find her in the midst of the storm. In the end, Hikaru comforts Haruhi, who is hiding from the thunder under the altar in a church, sitting beside her and giving her his headphones to drown out the sound. He apologizes for the way he acted and Haruhi forgives him. At the end, Kaoru remarks to Kyoya that Hikaru will not notice his feelings for Haruhi because he's a dummy while Kyoya comments that their club is full of dummies.
This episode provides examples of:
- Bad Date: Hikaru and Haruhi’s date goes well until Hikaru abandons Haruhi because of his jealousy of Arai. This leads to her being alone when a thunderstorm rolls in.
- Call-Back: Tamaki brings up Haruhi’s fear of thunderstorms when he learns that Hikaru left Haruhi before the storm rolled in.
- Green-Eyed Monster: Throughout most of the episode, Hikaru expresses obvious jealousy in Haruhi spending time with Arai. His jealousy gets so bad that he leaves Haruhi alone on their date right before a thunderstorm rolls in.
- Indirect Kiss: Defied. Tamaki, disguised as an ice cream vendor, gives Haruhi and Hikaru a separate cone to prevent an indirect kiss via Haruhi sharing her cone with Hikaru.
- Oblivious to Love: Haruhi didn’t realize that Arai had feelings for her in middle school and she accidentally friend-zoned him. She also doesn’t realize that Hikaru’s behavior was him expressing jealousy over Haruhi’s relationship with Arai.
- Romantic Wingman: Zigzagged. Honey and Kaoru try to help ensure Hikaru and Haruhi’s date goes well. The latter especially knows Hikaru likes Haruhi, which is why he set the two on a date. Tamaki, on the other hand, tries to prevent them from getting too intimate.
- Stalker without a Crush: The host clubs follows Haruhi and Hikaru on their date to make sure everything is going well. They eventually leave them alone when it looks like the date is going well.
