The Mabinogion tetralogy

Death is a recurring consequence of conflict, betrayal, and supernatural events; grief and loss are important parts of the tragic mythic tone.

Injuries are described in keeping with heroic tradition, but the focus is on the impact and narrative significance rather than visceral bloodiness.

Uses formal, elevated, and archaic literary language suitable for its mythic subject matter; no modern profanity.

Some gender transformation and nonconforming elements may invite queer interpretation, but explicit LGBTQIA characters or relationships are not prominent.

Pre-Christian Welsh mythology, supernatural cosmology, ritual-like acts, enchantment, and otherworldly beings are foundational to the stories.

Marriage, desire, courtship, betrayal, and complicated romantic relationships are central to several of the retold legends.

Dark supernatural forces, curses, transformations, imprisonment, warfare and threats create sustained peril and an ominous atmosphere, though it is mythic rather than horror-focused.

Themes of fertility and adult relationships are present, though depicted with a mythic, non-explicit literary tone.

Feasting and the drinking of mead are occasionally mentioned as part of the historical/mythic setting.

Frequent battles, raids, duels, abductions, and retaliatory violence occur in the mythic stories, though presented as literary fantasy rather than graphic realism.