The game is one of the craziest and flashiest anime fighters to date, which is a given considering it's a Weekly Shonen Jump anniversary game.
Ryotsu, despite being a lazy cop with no special abilities, can somehow fight against aliens, samurai, ninjas, demons and gods and beat them in this game.
In the same vein, there's Chitoge, who is pretty much an ordinary schoolgirl, being able to deal damage to the above mentioned, possibly even kill them, with just a slap! Same with Kuroko and Hinata, who are just a basketball player and a volleyball player, respectively. In fact, there are quite a lot of Badass Normals here.
The sheer Continuity Porn involved is truly staggering, as there are all sorts of characters here; from series old or new; obscure enough for The Other Wiki not to know about them or extremely popular enough to be THE mainstream anime; comedy or action; characters of average human power level or near-godlike; each being represented true to their own mangas. Even the stages and graphics in general are gorgeous. All for the sole purpose of celebrating Shonen Jump being around and successful for 45 years. And It. Is.Beautiful.
Medaka calmly shoving Lala out of harms way (and rightintoChitoge) from said Getsuga Tensho and even gets to pose for kicks.
Ichigo vs. Gintokinote Sorachi is a fan of Bleach enough that Gintoki one time imitated Ichigo's Mugetsu, Ichigo and Gintoki also had C.Ds voiced by their voice actors
Luffy using a Gum Gum Bazooka in Gear 2nd to stop the Kamehameha fired towards Naruto (who just evaded it) going towards the aforementioned Ichigo vs Gintoki who were in a Blade Lock. To the surprise of everyone who had to witness that.
Really, we could just say the entire opening is filled with these.