Seffyna

Seffyna (세피나) is a female Korean Virtual YouTuber affiliated with NIJISANJI, formerly a fifth wave member of the previous NIJISANJI KR branch, along with Ban Hada and Song Mia.

Profile
''A fairy who likes to sing. Born from a flower, on the night of a full moon. Grew up in the hands of a witch. Came to this universe to conquer the human world.''

Personality
Seffyna is a playful girl who can be described as a "jack of all trades" content creator. True to her profile, she loves to sing, and hosts a singing stream or posts a song cover in a high frequency. On the other hand, she is also proficient in drawing, memes and video editing.

Background
On 23 April 2021, the names of the fifth generation of NIJISANJI KR members were revealed, as well as their Twitter accounts. On 27 April 2021, it was announced that the members would hold their debut streams on 30 April 2021. Seffyna was the first of the three to debut.

2021
On 7 May, she released her first official cover song "KING" by Kanaria.

On 13 May, Seffyna celebrated her channel Monetization.

On 17 May, Seffyna opened her channel membership feature.

On May 19, for the first time, Seffyna collaborated with a member of NIJISANJI outside of her generation Han Chiho in "Untitled Goose Game."

On 21 July, Seffyna celebrated her 10,000 subscribers on her channel.

On 2 August, Seffyna celebrated her birthday.

On 7 August, Seffyna celebrated her 100 days since her debut.

On 4 October, Seffyna celebrated her 20,000 subscribers on her channel.

On 30 October, Seffyna celebrated her 6 months anniversary.

2022
On 1 January, Seffyna reached 30,000 subscibers on her YouTube channel.

On 9 March, Seffyna reached 40,000 subscribers during a "40K COUNT DOWN!" stream.

On 17 March, Seffyna announced that she would have a new outfit.

On 21 March, Seffyna debuted her second outfit.

On 15 April, along with the merger of NIJISANJI ID and NIJISANJI KR into the main branch, Seffyna is now officially affiliated with NIJISANJI.

On 30 April, she celebrated her one year annivesary.

On 2 May, she reached 50,000 subscribers on YouTube channel during a stream "50K COUNT DOWN".

On 22 May, she reached 60,000 subscribers on YouTube channel during a stream.

On 2 June, she reached 70,000 subscribers on YouTube channel.

On 14 June, she reached 80,000 subscribers on YouTube channel.

On 7 July, she reached 90,000 subscribers on YouTube channel.

On 27 July, she reached 100,000 subscribers on YouTube channel during an endurance stream.

Events

 * On 15 May 2022, Seffyna organized and participated in "NIJI Melody Time", the second NIJISANJI singing relay collaboration she held involving Livers from various countries.
 * On 14 August 2022, Seffyna and Ryushen held "NIJI Melody Time", a NIJISANJI singing relay collaboration event. The event would take place continuously for 24 hours with the participation of 48 members, starting at 8 pm JST on 27 August by Seffina and ending by Ryushen the next day.

Fans and Mascot

 * Her fans are called "SeffyNite" (세피나이트, セフィナイト).

Trivia

 * The ff in Seffyna derives from the music dynamic fortissimo, meaning "very loud."
 * She shares character designer Yushika with Han Chiho.
 * She is very close with her kouhai Na Sera; the two collabs very frequently, and also often appear together in large-scaled collabs.
 * In January 2022, Korean donation site Toonation released a TTS (text-to-speech) message reader using Seffyna's voice; she uses a unique high pitch voice intended to be associated with her chibi form that she frequently draws on Twitter; due to the TTS's nature as an AI that reads the messages when donated, her chibi form has been nicknamed "Mechafyna" and conceived as a creature who eats golden "shiny and dazzling" coins since then.
 * She often posts a short video featuring Mechafyna, with the one of the most famous videos, simply titled "MONEY SONG," becoming a "digital drug" video akin to Rosemi Lovelock's The Great Rosemi-sama Theme Song. Even some of her kouhais such as Shikinagi Akira and Maria Marionette are fan of it.
 * In May 2022, during a Minecraft stream, Yorumi Rena accidentally called Seffyna a bee cosplayer, since then she has been joking nicknamed a "bee fairy" by some Japanese viewers.

Media

 * セフィナ / Seffyna【にじさんじ】 - YouTube channel
 * 세피나 - Twitch channel
 * @Seffyna2434 - Twitter account
 * @seffyna2434 - Marshmallow account
 * Seffyna's corporate profile on the official NIJISANJI website

Twitter hashtags

 * #Seffy_live - Stream
 * #SeffyNite - Fans
 * #Seffynart - Fan art
 * #センシフィナ - NSFW
 * #Seffy_song - Song
 * #Seffy_voice - Voice
 * #SeffynaEat - Food
 * #Mecha_fyna - MiniFyna (Her chibi)

Further readings

 * 세피나 (セフィナ / Seffyna) - Unofficial NIJISANJI Wiki