the story. It's revealed in Tsumihoroboshi-hen that she's resentful towards her mother, Reiko when the latter was revealed to be in an adulterous relationship with Akihito, her co-worker who got her pregnant with the man's child and made a decision to divorce her father and start a new family with him, Reiko proposed Reina to join her which she angrily rejected. Reiko left her for good causing her to have a mental breakdown followed by her breaking many windows and assaulting three male students with a baseball bat at her local school and attempting to slit both her wrists under the influence of the Hinamizawa syndrome. Believing herself to be cursed by Oyashiro for leaving Hinamizawa, Reina and her father returned to the village after the incident, and changed her name to "Rena" because the letter 'i' in Reina represents 'icky' things that she swore not to remind her of. So as not to alarm Keiichi about the incident, Rena claims to be a relative newcomer of the village. Due to the incident, Rena is sensitive about the topic of Oyashiro, believing strongly in the existence of the deity and the curse, and becoming angry and unstable whenever anyone questions it. She wields a large machete borrowed from her tool shed. Played by: Rin Asuka (film), Rika Nakai (TV series) One of Keiichi's friend's, Shion's identical twin sister and the leader of the after-school club. Her social skills are on par with Keiichi, whom she highly respects as a friend and rival (though it is later shown that she is in love with him). She acts like a tomboy, and calls herself oji-san (meaning old man), but has a hidden girlish side. She is next in line to be the head of the Sonozaki household, one of the Three Families holding tremendous influences. She is often seen with a holstered airsoft gun, even though she does not use. It was removed in the PS2 adaption of the game, but she's well-adept in the use of martial arts as shown in Minagoroshi-hen. She is notable as the only character that has never been driven to the extreme paranoia that causes the others to kill in the question arcs and the first two answer arcs. Her real name is actually Shion, as she was born second to the family, but due to the sisters who chose to swap together during their childhood