This Sunday, January 18, 2026, at 6 a.m. PST/9 a.m. EST, Hana-Kimi episode 4 will air. Mizuki finds the situation to be far too complicated. Sano is staying quiet about being a girl, Nakatsu's "gay" panic is getting out of control, and her hidden identity is dangling by a thread. The drama from the last episode still has a lot of tension, and to be honest, it feels like everything is about to blow up.
Hana-Kimi episode 4 is available to watch on Tokyo MX, BS11, MBS, CBC TV, and RKB if you're in Japan. When it becomes live, fans from other countries can watch it on Crunchyroll with subtitles.
The Events of Episodes 1 and 2

Mizuki's completely insane scheme to move from America to Japan and enroll in an all-boys school in order to meet high jumper Izumi Sano marked the beginning of the series. She pretended to be a man, cut her hair, and managed to pull it off. In a way. When they initially met, Sano stated she "looks like a girl" right away, which wasn't how she wanted things to go. Additionally, she moved in with him, which made it much more difficult for her to conceal her secret.
Nakatsu, the amiable soccer player who asked wildly inappropriate questions and assumed Mizuki was just another guy, was introduced in episode 1. Additionally, there was Yujiro, the dog who was immediately attracted to Mizuki but only liked girls. Not quite subtle. After Mizuki was injured while playing soccer, Dr. Umeda discovered her secret by the end of the first episode. Knowing everything, the school doctor chose to observe the mayhem.

When Sano discovered that Mizuki was a girl in the second episode, things quickly got out of hand. He felt enough proof to make the connection and princess-carried her. Nakatsu, meanwhile, began to feel something for Mizuki, leading him to believe that he was experiencing a gay awakening. The poor guy was genuinely infatuated with a female and was unaware of it.
We also got to know Sano's childhood buddy Rika, who encouraged him to resume high jumping after he had given it up due to an injury. Before Hana-Kimi episode 4's season ever got underway, Mizuki felt it would be a fantastic idea to sign Sano up for a track meet without telling him. This led to their first major argument.
Episode 3 of Hana-kimi

The plot of Hana-Kimi Episode 3 revolved around Nakatsu going insane due to his emotions. He sincerely questioned his sexuality and continued to fantasize about Mizuki when taking showers. Because he was so confused, his internal crisis was both humorous and somewhat depressing. In the end, he made the decision to "become gay or whatever" in order to satisfy Mizuki. That is commitment.
When some weirdo attempted to take covert pictures of Sano and Mizuki, the photography club drama took a serious turn. Mizuki punched him in the face without hesitation. Dr. Umeda adored it and ignored the man she decked while checking to make sure she hadn't injured her hand. There was also the scene in the shower where Mizuki nearly got caught since she neglected to close the curtain. Not her best moment.
Mizuki realized she loved Sano as a person, not just as an athlete, during the poignant portion of Hana-Kimi episode 3. Beyond the high-jumping stuff, she wanted to get to know him. That change was significant because it indicated that her feelings were becoming more than just idolatry.
Hana-Kimi Episode 4: What to Expect

Hana-Kimi episode 4 will probably discuss the repercussions of Mizuki enrolling Sano in the track meet. He's still upset over it, and they ought to talk to each other instead of being apart. One of them needs to give in because the tension between them has been growing. Sano knows that Mizuki is a girl, but she doesn't know that he knows, which results in a strange and unsustainable relationship.
In the run-up to Hana-Kimi episode 4, Nakatsu's bewilderment is also about to explode. He will either discover Mizuki's secret at some time or continue to obsess about his attraction to men. It will be messy in either case. It will be more difficult for Mizuki to reveal the truth the longer she hides.
Additionally, the supporting cast may continue to grow in Hana-Kimi episode 4. As the dorm dynamics become more complex, characters like Nanba and Kayashima, who have been lurking in the background, may take on more significant roles. Rika may also return, particularly if Sano decides to compete in that track meet.
Conclusion
Mizuki can't continue avoiding near-misses indefinitely; that much is evident. It's only a matter of time till everything explodes because her disguise is hardly holding together, and many people already know her secret. In Hana-Kimi episode 4, the true question is whether she will tell anyone or if someone will reveal it first. In any case, Hana-Kimi episode 4 is setting up a significant drama that viewers have been anticipating.