.
Continuing from Chapter 14's confession, Nina knows that this isn't a dream. They sat by the river holding hands till Nina gets embarrassed as she still could not believe that she is really dating Koga. Nina then gets a text from her mother telling her to get back home soon since it was getting late. Although Nina wanted to stay for a while longer, she got up while Koga pulled her back asking if they could redo 'it'. Nina became embarrassed from thinking it was the kiss but Koga claimed the 'it' to be a date. This causes Nina to fluster and they planned their next date to be another firework viewing session. Koga then says he wants to head out during the day in their next date so that they could catch a movie. Nina agrees happily.
"Lets redo that too."
Surprising Nina as Koga suddenly pecks on her lips and later hugs her. A flustered Nina faints from excitement while Koga offers to bring her back.
Back home, Nina arrives just when dinner was ready. Worried, Aoi comes to check on Nina explaining that their mom was getting worried. Nina who is in cloud nine freaks Aoi out with her gestures.
"If this is a dream, I hope I won't wake up"
Next morning, Nina wake up in her bed thinking everything that happened was a dream till her mother came with a dress for her date with Koga.
"I'm not dreaming… !!"
Nina rush to the meeting point where Koga was waiting. As she approached Koga, Nina started tearing still asking Koga if it was a dream. Amused, Koga held her hands assuring her that it isn't thus starting the date. After having a fun day, it was time for dinner before the main event. As Koga looked for alternate ways to get to the fireworks, it caused Nina to fluster because Koga didn't want to let Nina be squeeze with the rest.
"It.. feels.. like I'm really his girlfriend. No, I'm his girlfriend! Yea!" Nina thought.
However, her train of thoughts was disrupted by a conversation behind her and the contents were about a situation that was exactly like Nina's and Koga's. Panic, Nina started to think if she should have left everything to Koga to plan instead of saying "anything" just when Koga has found another route; but the bad news was that it might rain thus the fireworks event may be cancelled therefore it might be better for them to head back early if not they could walk for a while more. But the panicking Nina insisted that they should go to places Koga wanted to go, later thinking if she should be the one bringing him around. Seeing the mentally stressed Nina, Koga suggested a place where they can be alone. With that, Koga pulled her away, coincidentally bumping into Kuni kun who sadly asked if they were on a date and where they were heading despite the sun setting; Koga teases him by not telling.
On the train, Nina can't help by wondering where they are heading when it started to rain. After getting off, Koga said,
"Actually grocery store is fine. No matter where, as long as I can be with Nina, won't it be fun?"
Surprised, Nina tucked on Koga's sleeve when he suggested they should head back though it was amity they couldn't catch the fireworks again. Saying that they could still see the fireworks. And her plan was firework sticks. Despite the compromise, they still had fun and while Nina was happy remembering Koga's speech, Koga suggested they should watch the fireworks again next year. Thought it surprised Nina, but she was looking forward to it as well.
The next scene start with the new semester. Nina starts school with a confident look of being an 'official girlfriend'. Just so happens, Koga greets her causing her to fluster saying that she doesn't know how couple should behave in school. Amused, Koga just replied that its no different from before thus shocking Nina.
"Then the next… date…"
"Next? Ohh! You said its the fireworks event next year!"
"Ne.. Next year?!"
Leaving a devastated Nina for class, Koga waved goodbye. At that time, Nina's classmates started to congratulate her on dating Koga but shock from the previous conversation with Koga, Nina is no where near happy.
On his way to class, Koga was stopped by Kuni kun saying that he wants to talk to Koga about his ex girlfriend…
End of chapter 15