Yuuya Mochizuki

"I feel uneasy about everything."

- Yuuya Mochizuki

Yuuya Mochizuki is a student at Yomiyama North Middle School, Class 3-3. He is one of the older members of the art club. Yuuya has an older half sister named Tomoka.

Personality
He is calm, innocent, patient, and usually quiet around strangers, but cheerful and sociable around his friends. Mochizuki is good friends with Naoya Teshigawara and becomes Sakakibara's first friend from Yomiyama North Middle School. Also, Mochizuki was in good terms with Ikuo Takabayashi before he died.

Appearance
In the anime: he has a dull, reddish brown hair and gray eyes, and wears long trousers and a blazer-less shirt for his uniform.

In the manga, he has light colored hair and black eyes. Yuuya also had a feminine look.

Plot
In Episode 5 Mochizuki and Takabayashi are invited by Kouichi to walk home with him. During this episode, they witness Takabayashi's death. Mochizuki left a letter underneath Kouichi's desk, stating that Mei will explain the rest of the story.

In Episode 7, Mochizuki participates in the meeting at the Inoya Cafe organizated by Teshigawara, along with Akazawa and Sakakibara.

In Episode 8 Yuuya was going along with Reiko, Kouichi, Teshigawara and Akazawa to the hotel where Matsunaga works and lives. Later, they were going at the beach. Teshigawara decided to have a "contest" ; fishing for lunch ingredients. Mochizuki was in the team Non-existent with Mei and Kouichi. At the end of the episode, they witness Junta's death.

In Episode 9 Mochizuki meets up with Kouichi and Teshigawara to look for the item that Matsunaga left in the old classroom. They found a recording tape and unfortunately Teshigawara broke the tape later on. Yuuya offers to repair the tape himself.

In Episode 10 Mochizuki repaired the tape, and had heard the most important part along with Mei, Teshigawara, and Kouichi. Also, he took Mei's side when Izumi confronted her about the deaths.

In Episode 11, after knowing that there was a killer around, Mochizuki suggested to look for Ms. Mikami first. He and Teshigawara went around to check and when they reached a room. They found Keiko in the room with blood stained chopper, Keito attempts to attack them and during the process, the chopper cut Teshigawara's leg. Mochizuki went to help Teshigawara escape from Keiko but Keiko followed them along the hallway. Also, Yuuya shows the tape to Takako and Izumi.

In Episode 12, Yuuya pushes Teshigawara out of a window while running from Keiko. He was about to jump out as well when Keiko grabbed him and started pulling him back up towards her. Teshigawara jumped up and pulled back, sending Keiko and Yuuya crashing to the ground. Keiko attempts to kill Teshigawara but they're saved by Chibiki. Chibiki leads them to his car where he tends to Teshigawara's wound.

The anime ends with Yuuya and Teshigawara putting a tape they recorded about how to stop the calamity into the locker where they found Matsunaga's original one.

Kouichi Sakakibara
The two became friends quickly. They talked about art among other things. He was present when Takabayashi died; before he died Kouichi asked him for the class roster - after ignoring Kouichi he slips a copy into his bag and asks for forgiveness as he did not want to pretend that Kouichi did not exist. They were able to make amends and stayed friends.

Mei Misaki
They had a little interaction through the manga and anime. In episode 10, Yuuya defended her from Izumi.

Naoya Teshigawara
They are best friends and usually do things together. Throughout the Anime and Manga they are usually together. When Keiko went insane and wounded Naoya, Yuuya aided and saved him; and in return Naoya saved him as Keiko tried to attack him; she was later killed by Chibiki. After the Calamity had ended they both created a tape and thoroughly explained what to do; they put the new tape into a locker where they found Matsunaga's original one.

Reiko Mikami
Yuuya had a crush on Mikami-sensei. He spent time with Reiko when they went to the beach together (Episode 8) however outside of this there isn't shown to be much interaction; whereas in the Manga it is only suggested that he has a crush on her.

Gallery
Main article: Yuuya Mochizuki/Image Gallery

Quotes
"It doesn't do any good to pretend you can't see what's going on."

Trivia

 * He is ranked A+ in Another characters ranking. (However he is highlighted as red, which is used to indicate female characters, apparently indicating the fandom think he's a better girl than most of the girls). In the original novel, Kouichi notices that Mochizuki has a very feminine appearance. This carries over into the anime, where he is often mistake for a girl.
 * His home address is 1-13 Tobiicho Yomiyama City.
 * His first name, Yuuya, means a hundred nights.
 * His last name, Mochizuki, means Full Moon.
 * His family owns the Inoya cafe where his older half-sister, Tomoka, works as a waitress.
 * In that manga, Yuuya has a twin brother named Naoya. Coincidentally Naoya Teshigawara has the same name.