Female and male first names : Japanese.

Omiya is a Japanese name meaning "sacred gathering," originating from the city of Omiya where gods were believed to meet beneath a holy tree during the Heian period.

Onekki is a distinctive Japanese name coined by Haruki Murakami, meaning unknown but capturing global attention through its appearance in his novel "Kafka on the Shore.

Oni is a Japanese name derived from 'oni', meaning ogres or demons, signifying strength and courage.

Oniya is a captivating Japanese name derived from "oni," meaning "demon" or supernatural entity, popularized during the Edo period among samurai families.

Onna is a captivating Japanese feminine name derived from 'onna', meaning 'woman'. It signifies womanhood strength and has been associated with grace, elegance, wisdom, and resilience throughout history.

Oriyana is a unique female name of Japanese origin, meaning "eightfold path" and signifying the journey towards Buddhist enlightenment.

Oshin is a distinctive Japanese name derived from "oshio," meaning "ocean tide," reflecting the powerful ebb and flow of nature's tides.

Ota: A Japanese name of ancient origin meaning "great" or "large," historically prominent among Imperial families and samurai like legendary warrior Ota Dōkan; now globally recognized due to globalization and cultural exchange.

Otome is a Japanese girl's name which means "maiden" or "virgin," derived from the word "otomego." It signifies becoming a maiden or entering womanhood, and has historical significance appearing in classical Japanese texts since the Heian period (794-1185). Today, Otome remains popular in Japan and internationally due to its use in popular culture like anime and manga series.

Oyuki, of Japanese origin, means 'snow sound' and has a historic association with the Heian period and the fairy tale 'Oyuki-bo.'

Oyuky is a unique Japanese name meaning "ninth month," symbolizing growth and transformation, though rare as a given name.

Perilla is a rare Italian-derived girls' name originating from 'perilla', a Latin term for shiso, a plant used in Japanese cooking. Despite lacking historical significance or widespread popularity, Perilla's unique culinary association has made it appealing to parents seeking distinctive names.

Rai is a distinctive Japanese boy's name meaning 'thunder', symbolizing strength and divine power.

Raiden: A Japanese origin name meaning 'thunder field', it's associated with the Shinto storm god, symbolizing strength and courage.

Rain is a Japanese female given name derived from 'Ame,' meaning rain in English, conveying freshness, renewal, and life.

Raika is a Japanese name meaning 'thunder', popularised by Lady Murasaki Shikibu and believed to invoke blessings of powerful deities.

Ran is a Japanese unisex name derived from 'らん', meaning 'lotus' and symbolizing purity amidst adversity.

Rayden is a unique male name of Japanese origin, derived from the word "raiden," meaning "thunder god." It signifies the deity of lightning and thunder in Japanese culture.

Rei is a Japanese unisex name derived from the kanji 令 meaning 'command' or 'order', reflecting ancient imperial titles and court hierarchy.

Reia is a captivating Japanese name derived from "rei," meaning "zero" or "emptiness," but symbolizing potential in Japanese culture. It was also the name of benevolent Empress Reishi during the Heian period.

Reika is a Japanese feminine given name derived from "rei" meaning "zero" and "ka" meaning "addition", translating to "beginning" or "start". It suggests fresh beginnings and continuous growth, popularized by singer-songwriter Reika Kurokawa.

Reiko is a popular Japanese female given name meaning "beautiful child.

Reimi is a charming Japanese name derived from "rei" (spirit) and "mi" (beautiful), meaning "beautiful spirit".