Somehow, Taiju convinced the three of you (Yuzuriha, Senku, and you) to go to an arcade after school. After buying some tokens, Taiju went with Yuzuriha to try the two-player video games leaving you and Senku alone. Sigh, what fun do people find in these type of places?..

That was what you thought.. until you found a claw machine that has planet-shaped necklaces as prizes inside! Of course you tried it, you liked space as much as Senku does. You inserted your tokens in and tried to win one, not once, not twice, not thrice, not even four times BUT 5 times..

Senku was just standing besides you, watching you try to win something. He kept repeating the lines "Absolutely no way you're gonna win that."

You gave up after the 7th time and then looked at him with pleading eyes, trying to beg him to win it for you."

"Absolutely ten billion percent no way."

And thats how it ended up with him playing the machine trying to win a necklace for you, he doesn't even know how you managed to convince him.