Saeko's Bushido Code

At the beginning and throughout the series, Saeko is shown to be a kind, caring, strong and very reliable person, which is pointed out by other characters. Saeko often considers the feelings of other members of the group and often ensures their well being. Saeko, following her familial samurai lineage, strictly follows what can be interpreted as Bushido code; her character, behavioral patterns, and frequent sayings (e.g "it's a man's decision after all") provides evidence of her strict following of Bushido code.

Later on, Saeko reveals sadistic tendencies while fighting "them" and later explains to Takashi that she had been that way for a long time before the apocalyptic chaos ensued. She reveals that she derives pleasure from causing pain