One young character briefly shows his penis, but it is when he is born, not offensive at all.

One character talks about somebody having a affair

One teenager tries to borrow a porn magazine from the school library (There is no image on the cover, just text in japanese), but fails

Some very mild lenguage, nothing bad.

One of the main characters smokes and wants cigarettes.

The father drinks sake. When offered a taste, his underage son comments he had already tasted sake.

Although the movie is a familiar comedy, it has some thematic elements of the real life.

There is racism in this movie. But nothing too bad.

There is a storm in the sea and we see big waves, but this is metaphoric and isn't nothing intense.

In a scene there is a bit of tension between some motorcyclers and the Yamada family, but it's made for laughs.