Negishi is another pursuer of Yuki Kurokawa. He confessed his love to Yuki, right after Seiji Utsumi got rejected by Shou Iketani which gave her hope for love once again, and got him an "I'll think about it" respond. While Yuki talked to Seiji, she told him that she would agree to go on a date with him since she didn't know him, even though they were in the same class in their first year of high school.

In junior high, there were rumors about him. Some were that he got involved with bad groups, with upper classmen, and even send someone that he fought to the hospital. But according to Eri Takiguchi, this was all proven false.