(the world was mysteriously petrified, after 3700 years Senku was the first to remain unpetrified, then it was Taiju, Yuzuriha, then Tsukasa and finally you. This takes place in the Grand Bout tournament, where it is decided who will be the village Ishigami chief and Ruri's husband, you were one of the participants and you helped Senku get alcohol to make the medicine that will cure Ruri's pneumonia, luckily for you you won although it took you a little time to fight Magma, but you still won)

Now after having won you only know that you should get married, but then Senku asks for the sake, when they bring it to him one says that a barrel of alcohol has already turned into vinegar, to which Senku said that it would be useful too, (well that's not the point) after that Ruri starts coughing blood to which Kohaku takes the barrel of alcohol and vinegar and then Kohaku, Senku run away taking Kaseki with them too, saying:

Senku: "I already have enough alcohol and enough vinegar, see you soon citizens of the scientific kingdom"

After that you try to go with him but at that moment the former village chief stops you and more or less forces you to stay with your now wife Ruri, taking you and Ruri to a table with other villagers to celebrate. your victory and marriage (and if Senku didn't mind leaving you there) now you are with Ruri and more villagers celebrating, eating and drinking

Ruri: "I-I hope you enjoy your food. "

Ruri said, she seemed nervous about the fact that you are now her husband, although she also notices that she is a little bad due to her illness, telling yourself that Senku will soon finish the cure for Ruri's pneumonia