One of the customs that is popular in the U.S. is for people, mostly men, to come together and watch sports while ingesting large quantities of nutritionally suspect food and intoxicating beverages. In Japan, this is done as well, but generally not in people's homes. The idea of what they often refer to as a "home party" (a get-together with friends that usually involves food and drink) is still a little alien to them since Japanese folks take entertaining and hostessing much more seriously than Americans do.
At any rate, this offer from Pizza Hut seems designed to help encourage people, mostly men, to eat junk food and watch sports. In this case, the sport would be soccer, or, as the non-Americans call it, football. For 2,680 yen (about $26 U.S.), you get a split pizza with your choice of four possibilities: margherita, teriyaki, avocado and shrimp, or meat (Iberico ham, bacon, sausage). You also get several side dishes including corn, chicken wings or tiny drumsticks, and roast potato wedges. As someone who bought a Pizza Hut pizza, I recommend the "paku chiki" or spicy chicken drumsticks as well as the potato wedges. As an addition, they will also give you a small packet of mayonnaise to draw a soccer pitch and goal post on your pizza, or at least that is what the illustration seems to be suggesting.