Minamoto Rikka

Minamoto Rikka (源 立夏) is a Japanese high school student.

Appearance
Rikka has a cute appearance overall, her hair is cedar brown, long up to her back, and wavy at the end, ample bust, slender waist, big flint grey eyes, and a soft featured face.

History
Rikka was riding the same bus with Amakawa Haruto and Endo Suzune and died at the same time as them, while riding the bus it was said that she constantly stole glances of Haruto, but a little more discreetly compared to Suzune. She used to live in Tokyo's Bunkyo district and was 16 years old at the time of the accident, after her death that day she reincarnated into Liselotte Cretia, daughter of the Duke Cretia from the Kingdom of Galarc.

In volume 10, when Rio says to Liselotte after their dance " There wasn't any direct contact between us when we were in Japan and maybe it could have continued that way if we hadn't reincarnated but I'm happy having met you in this world", Liselotte thinks to herself "(You may not remember me but we met once when I was in the middle school, Amakawa-senpai)".

Going by this exchange and their age gap, it seems Haruto talked to Rikka once at anytime between the beginning of his second year of highschool and his graduation, and that Rikka's midschool needed to belong to or being a division of Haruto's highschool for them to have senpai-kouhai relationship, something that curiously enough would make her to be Satsuki's, Miharu's and Takahisa's kouhai too.

Unfortunately the details of the encounter between Haruto and Rikka are still unknown, one of the bonus stories of volume 8, where in a what if world Haruto saves Rikka from a group of guys trying to pick her up, made a part of the readers think the two met each other that way, but that's impossible, volume 17 revealed that Rikka was 16 at the moment of her death while Haruto was 20, so to say, the age gap between the two is of four years, inside that SS the age gap between Haruto and Rikka was of just two years, making it clear that that SS was just a what if.

Amakawa Haruto

 * her senpai at middle school.

Endo Suzune

 * her fellow Haruto's observer/stalker.

Fujiwara Mafuyu

 * her Cousin

Etymology

 * Minamoto means "source, origin" (源).
 * Rikka means "standing" (立) (rik) and "summer" (夏) (ka).

Trivia

 * Both Rikka and Endo Suzune noticed what each other doing in the bus.