A great detective – her sharp eyes pick up on subtle hints for her bright mind to piece together. With a knack for seeing through people and their true intentions, Rena can easily solve seemingly baffling mysteries.
A kind girl – she comforts and helps others in need, noticing their feelings and supporting them even if their best interests conflict with her own.
A cunning competitor – she puts up an innocent front, but is ready to do anything she needs to win in the games the Club plays, be it finding loopholes in the game rules or simply abusing her female charm.
A true friend – for those she believes in, Rena could face death with a smile on her face.
Yet two of her sides are burned into people's memory in particular.
The Kaaii mode – a near- orgasmic berserk state induced by contact with anything she considers to be "Kaaii~" (a corruption of "kawaii" – cute). This usually involves taking the targeted objects or people home, leading to her infamous exclamation of “Omochikaerii”. Even tying her up in rope has proven ineffective at stopping the Omochikaerii dash, and the things that qualify as "Kaaii" may sometimes be incomprehensible (e.g. the statue of the KFC Colonel). This fixation means she likes to rummage around in the garbage dump for hidden treasures.
The Oyashiro mode – eyes glazed into a strange hypnotically cold stare and voice no longer sunshine cheerful but a quiet, creepy semi-flat tone, lecturing you or mumbling something, with explosive denouncement or chilling laughter following through. Beware of her trademark Cleaver – a large hatchet blade slightly hooked at the end, and never ever lie to her, she knows your secrets. All of them.
Beneath the cheerful everyday life and exclamations of “Hauuu”, Rena hides a dark past and a troubled personal life. But what else would you expect from a resident of Hinamizawa, especially one so fanatically loyal to the Demon Village and its guardian god Oyashiro?
Incidentally, the anime conservatively tweaked her casual outfit to have her stockings go all the way up. Originally, that is a Zettai Ryouiki slit.