Endel teaches Kadri (both adult teachers) to fence in one scene, involving mildly touching her arms and hips to position her. It becomes slightly suggestive but hardly serious.

In two scenes, Endel and Kadri kiss tenderly, then passionately.

Of course, the movie is about a form of swordplay, but it's all played safe with adults and children wearing proper safety equipment and, sometimes, corked sword tips.

The school principle smokes cigarettes in multiple scenes.

The historical context of the Soviet secret police taking people away for serving as Nazis in WW2 may make some scenes feel tense, especially as we see a child's guardian escorted away at night.