Chiyomi Hashiguchi (橋口 千代美, Hashiguchi Chiyomi, née Nakayama (中山), January 19, 1967 – May 10, 1998), known by the pen name Nekojiru (ねこぢる, a portmanteau of Japanese neko ねこ "cat", and shiru しる "soup"), was a Japanese manga artist.

In 1990, she debuted the June issue of the monthly manga anthology Garo with Nekojiru Udon, which is now considered her definitive work.

While absentmindedly sketching "an odd octopus-like cat" Yamano took interest in Nekojiru's drawings, stating "it had a raw childlike appearance that wasn't filtered through adult eyes - it was cute, repulsive, and cruel-looking all at the same time."

In April and May 1998, Nekojiru spoke with several editors complaining about the workload and artistic limitations imposed by the new influx of work.

Her manga detailing the daily life and adventures of the cats Nyāko and Nyatta are held in high esteem.

She also requested to be buried with all the CD albums made by Aphex Twin, according to a MuzikMusik magazine article.

Yamano declined to provide details about motives but denied media allegations that it was a copycat suicide after musician hide's death.

Shortly before her suicide, Nyāko and Nyatta, the two main characters of Nekojiru Udon, were selected to be used by Tokyo Electric in promotional campaigns.