Previously-original character created by 774 (nanashi), now serialized into the manga Ijiranaide Nagatoro-san.
She's described as being S-dere (Sデレ), or Sadodere. Frequently torments her senpai/boyfriend, Hachiouji Naoto. The game 774 made of her lists her under the name "Nagatoro Hayashi".
The following tags are aliased to this tag: nagatoro (learn more).