Raiden Mei is the second obtainable character of Houkai Gakuen 2.
During the Third Great Houkai, she was affected by the source energy and nearly lost herself. She was saved by her underclassman and then friend, Kiana Kaslana, just in time.
Story[]
Retrospective[]
She is the only daughter of Raiden Ryoma, the former president of Massive Electric Corporation. Born on April 13, 1996, her mother soon passed away due to cancer. She was raised strictly from an early age and learned the family swordsmanship of "Hokushin Ittou-ryuu" from her master, "Homu Swordsman".
When she was at Senba Academy, she was very popular at school because of her celebrity background and beautiful appearance. After her father was arrested and imprisoned, her relationships changed and her personality also changed.
She became the Third Herrscher when the Third Honkai Eruption began. Her ability is to control lightning. She returned to her human form when the Honkai Energy in her body was absorbed by Kiana.
According to confidential information, most of the preparations that Anti-Entropy made in Nagazora City were related to her. There seems to be some hidden reason why she became the Third Herrscher.
After leaving Nagazora City, she enrolled into St. Freya Academy along with Kiana and Bronya and joined the Fifth Platoon as a Valkyrie. She turned back into a Herrscher at the end of Retrospective, but was unable to stop Kiana from destroying the world.
Reborn[]
In Reborn, she has the same background as in Retrospective. She was captured while escaping from Nagazora City with Kiana and Kyuushou, and became the subject of experimental research by the Doctor, an Anti-Entropy Executor. She was rescued by the Valkyries of Schicksal, and was brought to St. Freya Academy together with them.
Outfit lore[]
Senba / Modern[]
Mei's father was the president of a major company, but just before the Honkai struck, the company was hit by a financial crisis, and her father was also caught up in a financial scandal, with most of his assets frozen. This incident had a major impact on Mei's personality, and the once cheerful girl became misanthropic.
Cheshire Cat[]
The Cheshire Cat of Halloween, the guide of dreams and fantasy. Mei, who plays this role on Halloween, some people say that she is a black cat enchantress sent by a witch to seduce humans just like a mouse in a pumpkin night. Her smile is true or false, and her guide is in front of a trap or a paradise... Only the guided person knows it. Maybe, she just wants to invite you to the Halloween party?
But there is only one thing she will say, and that is... In any case, the Cheshire Cat is your most loyal companion.
Beautiful girl and instant noodle[]
A new limited edition cup noodle flavor is on the market~
If you look closely, you will find a line printed on the bottom of the cup noodle:
This product contains 10 mg of beautiful girl concentrate, it is recommended to consume as soon as possible before the taste period.
Hoho, so is this the legendary cup noodles of a beautiful girl? I'm really curious what it will taste like~
Aeterna Purum[]
The sacred and solemn bells of the church in the distance rang, and the air was filled with the sweet fragrance of flowers. In the backlight, the girl in a white dress was holding a blue rose, her lips were opened and closed gently, and she softly promised an important oath sentence.
Stigmata[]

Raiden Mei - Thunder Soul Engraving stigmata
Although Mei's stigmata were suppressed, it cannot be hidden by normal means. The stigmata can strengthen the Melee abilities and Lightning Damage, suitable for advanced players.
Base Upgrade[]
EX Upgrade[]
EX Upgrade 1[]
EX Upgrade 2[]
EX Upgrade 3[]
Houkai Gakuen 2 mainline[]
Role abilities[]
Herrscher power and Stigmata[]

Raiden Mei as the 3rd Herrscher
Herrscher power and Stigmata in Raiden Mei allows her to use electric / lightning based abilities.
Hokushin Ittō-ryū[]
From an early age, Mei and her master "Homu Swordsman" learned the family-renowned swordsmanship called "Hokushin Ittō-ryū", which originated from the famous swordsman Hokushin Mei during the Warring States Period in Japan. Mei had great accomplishments in swordsmanship when she was 8 years old.
God Killer Armor[]

Raiden Mei's God Killer Armor
Raiden Mei's God Killer Armor is the strongest weapon developed by Dr. MEI in the previous generation. It can be used by let it absorb massive amount of Houkai energy, so the necessary condition for using this armor is that the wearer is a Herrscher.
Gallery[]
Main artwork[]
Alternative artwork[]
Trivia[]
- Mei is the second gacha character can be obtained without spending any crystals through a special mission in version 8.1. The first character can be obtained through this way is Bronya
- Mei's default design and chibi eyes are gray instead of purple since she never used Herrscher's abilities in Retrospective.