Incomprehensible ending (fashion 7 days of summer) (Everlasting Summer)

Good time of day, lovers of endless summer!
I, like many of you, after passing the original work decided to go through various fashions, in order to return to this cozy atmosphere of the summer camp. After going through "Kefir, Rolls rock and roll," "Samantha" and "Frosty Kiss," I came across "7 Days of Summer." After playing four times, I managed to kill Somen at the beginning, finish him off at the end, make him create and live in a family without the girl of his dreams, and the fourth passage in general left me in a stupor. Calmly passing on the end of Lena and having lasted the main three days, instead of a new, fourth day, mod gives me this.





Please explain to me, please, what is this strange ending and how to pass on the good?