Chapter 77: The twins' birthday
That night, Izu and Ochaco look out their balcony together as they wish that the adults of the former Warcraft of Doom is here (because the twins used to be scared of Hatsume and Himiko) until Gentle and Labrava came in to tell them about recent reports about Team Randall and Team Pomegranate, which is that Randall and his remaining comrades has decided to call themselves Team Randall until they decided on a better name for their new organization. As for Team Pomegranate, they are just chilling on their island. Ochaco then asks the duo for anything about the upcoming war, causing Gentle to say that Team Randall heard about the twins' fight during the exam and are now going to find a way to take advantage of this. While Izuku and Ochaco were talking to Gentle and Labrava, Luigi came through the wall as a ghost and take out what seems to be Izuku's diary and paperwork involving Kouna being a reckless troublemaker when she was four years old along with her brother Hisashi. Soon, Izu says that something isn't right if Randall and his comrades are going to take advantage of Kouna, especially after the incident, causing Ochaco to get mad and Gentle and Labrava to tell everyone that they must protect the twins from being convinced to become villains, causing the duio themselves to say yes ma'am.
The next day, Izuku and Ochaco woke up and look at the calendar solemnly because not only that today is the twins' birthday, but they are still grounded until they get along. Soon, Eri came into their room and told them to cheer up because the twins might finally get along since they are now sixteen, causing Izu to smile before telling Ochaco to follow him downstairs so she'll get her favorite breakfast, which is cinnamon roll pancakes. After the couple and Eri came to the first floor in the elevator, they were greeted by Akumo and Abby, who then told them that the twins are outside training themselves, causing Izu and Ochaco to look out the window to see Hisashi being Kouna's coach as she trains with Himanko, which also caused Ochaco to smile as her husband became impressed before telling everyone that they are going to celebrate the twins' sixteenth birthday today. Everyone then cheers afterwards. Meanwhile, Kouna took a breather as she thanked Himanko for helping her train before flexing her muscles so Hisashi can measure them. After measuring Kouna's muscles and giving her bottled water, Hisashi told Kouna that ever since their fight yesterday, things are changing so fast, so they must do something to make it up for everyone who heard it on the news, causing Kouna to agree before asking her brother if he really does hate her. Just as Hisashi was about to answer, the twins' cousins Neito Jr. and Tarafukay came to take them somewhere for their birthday, causing Kouna to become overly excited as Hisashi went inside to get his car keys so they can go.
After Neito sat with Hisashi in the front and Kouna and Tarafukay sat in the back, the quartet set off to Technodrome City to celebrate the twins' birthday. Soon, Tarafukay stops Kouna from rocking so she and Neito can tell them that now that they are both sixteen years old, they must put their differences aside permanently because they are practically adults, causing the twins to think for a moment before agreeing as Hisashi asks his twin sister for a truce. Soon, after making a truce, the quartet went through a montage until it ends with the twins returning to the mansion with Neito Jr. and Tarafukay to see a surprise party for them.
