|Japanese Air Date||February 11, 2016|
|Opening||START DASH SENSATION|
|← The Power of Idols||Spring DreAca Carnival! →|
Best Friend (ベストフレンド) is the 171st episode of Aikatsu! TV anime series and the 19th episode of its "4th Season" (
Rin and Madoka have been together since they first came to Starlight. But recently, the two of them are working so hard towards the Starlight Queen Cup and managing their daily schedules at the same time, they only pass by each other. Madoka who wants to perform a live with Rin again makes a reservation for the live house by herself...!?
Rin grabs her items for the day and heads off just as Madoka is returning home. Madoka remarks that once more they will be missing each other, then wishes Rin luck before revealing she reserved a concert hall for the two of them. She explains that because they're so busy, she was hoping to have something with her, just the two of them again. Rin agrees with the idea and takes off.
Later when Rin returns home that night, she finds Madoka already changed. However, she is surprised when Madoka reveals the mochi anmistu she grabbed from the recommended sweets shop while on her way home. She wanted until Rin returned to try it out, and together they eat while discussing things. They chat about the sweet taste of the anmistu, and Madoka brings up that she was happy to get it since it meant seeing Rin happy, and Rin asks if she reserved the concert hall herself. Madoka confirms she did, saying that she was used to doing it since she lent Luminas a hand with their own concert work. Rin thanks her once more, causing Madoka to voice how much she's looking forward to this. When they first joined Starlight Academy they were always together, but lately their time cut down the center, to the point they could only see each other during the morning and evening. Rin agrees with her, but claims that even then, some things don't change - leaving Madoka curious.
The next morning the girls discuss their show with Akari, Hinaki, and Sumire. They agree to see it since they will have the time.
Orihime, Johnny, and Naoto discuss Madoka and Rin's plans to hold a concert. She mentions how happy she is to see them still so close, and Johnny agrees.
Later, the girls prepare to do some training. They go over their schedules to make sure they can get in as much training as possible. They start with jogging and comment on how long its been since they last jogged together. Then they practice their jumps, and then their dancing until late in the night.
Sumire is going over something when Akari joins her. They discuss seeing the two girls work so hard that day, and how much effort they put in to working together, and being together while they can, and this leads Akari to recall meeting them. She had been assigned the energetic and lively Rin, who amazed Akari with her dancing, while Sumire wound up with the charming Madoka. They seemed to be so different at first, but they quickly formed a wonderful friendship. Sumire remarks that it may have had to do with being roommates, and brings up that she and Akari went through the same thing. After agreeing, Akari mentions that she is excited to see them perform.
Meanwhile, the girls watch older Aikatsu performances; like Yurika performing Eternally Flickering Flame, Aoi with Stranger Alien, Otome's CHU-CHU♥RAINBOW, and Ichigo's Dance in the rain, in an attempt to determine which song to sing. It's then they land on Ichigo and Seira performing in their unit, and Madoka wonders if their partnership is like theirs. Suddenly, Rin brings up the song she wants them to perform and she changes the video to their performance of Friend. Madoka agrees after Rin points out its perfect for their relationship.
The next day, Johnny approaches Orihime and Naoto. Naoto comments on how loud he is, but Orihime states that because he's like this, she feels at ease. If he were to ever be quiet, she'd start to worry. She likes him as he is, and he claims he won't ever change - because some things are fine as they are. He then reveals he came because the concert will be held tomorrow. Naoto brings up that Madoka and Rin set up everything by themselves, and he's happy for them as their teacher, although he is also a little worried.
Akari, Sumire, and Hinaki chat among themselves in the Cafeteria. They wonder how the performance will go and reveal that they don't really know anything yet - since the girls won't tell them any specific details.
Worn out from training, Madoka and Rin sit down. They are sure they've done everything, but with how much fun they were having they really don't want to stop. Rin suggests that with the time remaining they go out for some fun, and after they change and leave, Rin explains her desire to show something secret to Madoka. She excitedly trails behind her, with various towns people noticing the girls as they walk by. They pass by a busy district and Rin quickly starts to run with Madoka until they wind up down a path away from the city and come across a large cafe up a row of stairs before them. Madoka is surprised, as she's been wanting to go there but didn't realize Rin knew that. Inside, she is further surprised when Rin reveals that she set up a little birthday celebration for her, even getting a cake made.
Seeing how touched Madoka is, Rin lights the candles of her macaron cake and wishes her happy birthday. They eat until only a few pieces are left, with Madoka claiming she refuse to stop. She is amazed to find out that Rin made the cake herself, and asks where she found the time to do it. She also used today to show an amazing view to Madoka at this time of day, and they look outside to see the sun set in the distance and as Madoka feels herself ready to cry, she resumes eating the cake to stay calmed.
Later the girls make their way back home by walking through the park. Madoka yells out that she loves Rin, but in doing so they get noticed by a couple. The two approach the girls and they compliment on how easy it was to spot the duo. The girl asks for Madoka's autograph, who then hands it to Rin afterwards. Madoka asks to see it, then makes a heart with the pen on their autograph before handing it back. The woman thanks her while the make asks if they go out together so often, and the girls admit that they don't lately. However they will always remain friends, and the two wish the girls luck for the Starlight Queen Cup before they take off.
Back at the Dorms, Madoka comments on how much fun she had for the day, and Rin is delighted by Madoka's happiness; and they both are really happy. However, Madoka refuses to accept that Rin is as happy as she is, and they share a small laugh before promising to put on their best performance tomorrow. Madoka then thanks Rin and claims to understand, recalling what Rin said the other day. That no matter how busu they are, they will always be best friends.
The following day, Madoka and Rin share a few words before they promise to make it a great performance. With that they change into their school coords and appear on stage to perform, "Friend".
After the performance the two take off from the concert hall and they discuss how the performance went. Rin asks if their unchanging feelings will always resonate with the fans and Madoka claims that even if it may not to the fans, it will to them.
- Rin Kurosawa
- Madoka Amahane
- Akari Ōzora
- Sumire Hikami
- Hinaki Shinjō
- Orihime Mitsuishi
- Johnny Bepp
- Naoto Suzukawa
- The songs CHU-CHU♥RAINBOW, stranger alien, Eternally Flickering Flame, Dance in the rain and KIRA☆Power had made a cameo appearance in this episode.
- There is an error throughout Rin and Madoka's performance of Friend, in which they're shown singing during each others parts.
- This is the first episode to actively acknowledge an idol's current or upcoming birthday.