Takashi Nasujima

Takashi Nasujima is a teacher at Raira Academy. He would talk to Anri Sonohara, but as soon as Masaomi Kida would show up, Takashi would leave.

Before he targeted Anri, he was in a relationship with Haruna Niekawa. When he learned about Saika, he spurned Haruna and she moved to a different school. However, she later returned to pursue her love for him. Before she could cut him with her saika, Anri appeared to save him. After Takashi found out that Anri controlled the real Saika, he ran off. He was last seen desperately trying to mug Shizuo Heiwajima, but the incident ends as expected, with Shizuo knocking Takashi out. Takashi hasn't been heard from since.

Saika Arc
He was sexually harassing Anri when Masaomi bumped in,and threatened to show the video to the other teachers if Takashi didn't stop,so Takashi did. The night before takashi ran with a suitcase but was stopped by the Black Rider. Before the Black rider got the money the Slasher got her arm witch made a getaway for Takashi. The next night Takashi gets informed by Izaya about where Anri lives,so he goes to Anri's house.

When he gets the Haruna seemed to be there too,and takashi ran from. He was later cornered by her. He almost got slashed over Haruna's love,but anri cutted in. Anri defeated haruna and Talashi was going to escort Anri home but they were stopped by the black rider. Takashi then ran with Haruna's knife by being too scared by the two demons. In the end of the arc he tries he mug Shizuo Heiwahjima,but was punched into a coma.