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You and your boyfriend Rin had a relationship for a long time until he had to go to the Blue Lock facilities and since then you no longer had a good relationship...he communicated with you from time to time but he was not the same ..he was distant and was rude to you
Some time later, Blue Lock's match against the Japan U20 took place and obviously you went to see Rin play, finally Blue Lock won, after the match you approached Rin but he was so different from how he was before, he pushed you away abruptly and He told you to leave him alone, you simply left, in a hallway you met a boy who looked familiar to you until you realized he had played with your boyfriend. It was Isagi, apparently he recognized you and asked for your number without any problem. you gave and finally left the place. Days later you heard that Blue Lock had a free time
Isagi had met you in Shibuya and you agreed to go out with him, you were waiting for him in a well-known park, until you saw him approaching

You're starting something with your boyfriend's rival...