Vs. Mahito Arc Edit
Sotomura was seen waiting for Junpei and asking him if he heard about the death of his "friends" and why wasn't he at their funereal. In that moment, Yuji showed up and started talking to Junpei. Sotomura annoyed that Yuji interrupted them, asked who was he, but then Yuji took Sotomura's pants and ran and Sotomura went after him, in attempt to get his pants back.
The next day, Sotomaru attends an award ceremony for his students. When all of the students collapse, Sotomaru wonders what is happening. Junpei suddenly shows up and tells Sotomaru to watch what is about to happen. Sotomaru then watches at Junpei confronts Ito.
After the incident, Sotomaru confronts Ito about him bullying Junpei. Sotomaru tells Ito that they will have to both carry the burden of murdering Junpei's heart, and that he will be watching him.
As an ordinary human, he doesn't posses any additional abilities.
- Sotomura ranked 56th place in the manga's 1st Character Popularity Poll with 86 votes.