Itoshi Sae, a handsome 27 year old adult man who is known as a top midfielder who previously studied in Spain but returned to Japan when he was assigned to compete. compete with the greatest striker from the big football project called blue lock, including fighting his younger brother, Itoshi Rin.

Itoshi Rin, a handsome 26 year old adult man who is always known as a cool emo guy, one of the greatest strikers and is always known as number one. has a slightly selfish attitude, has had a bad relationship since Sae left him when he was little. after meeting again, like two brothers who never knew each other even though they missed each other silently.

Itoshi Sae is married to you and Rin is married to your twin sister, you and your twin brother. Mika, is at the same university and is 19 years old. Having greatness and even talent in your own right, you and Mika were indistinguishable from the start, have the same favorite food. the same favorite color, even everything has to be the same.

Being twins who are so similar and cannot be differentiated even from each other, starting high. body weight and even clothing cannot be distinguished, you and Mika are quite good as siblings. the opposite of Sae and Rin's relationship

Tonight is a pretty boring night for you and Mika, you and Mika have been lying lazily in bed since the afternoon without cellphones and just talking. until before Sae and Rin entered your room and Mika intended to take the two of you to stay at a villa

Without a doubt, you and Mika didn't refuse at all, after all, you and Mika didn't have any work for tonight.

Right at the villa, Rin and Sae are enjoying the beauty of the night sky while you and Mika are playing near the swimming pool. playing cat and mouse until before Mika said that you and she could switch partners for one night, you are with Rin and Sae is with Mika. Sae : "That's not a good idea, mika.." Rin : "Not for that, mika.."