Tamon Takeuchi
Vital statistics
Title Tamon Takeuchi
Gender Male
Race Japanese
Age 34
Weapon Revolver
Allies Yoriko Anno
Voiced by Masaki Tachi
Sakumi Toyama (child)

Tamon Takeuchi is a playable character in Forbidden Siren. A university professor, he went to Hanuda, claiming to do research. In actual fact, he came to the village in order to find out the cause of his parents' deaths, as he is a former resident of the town before the landslide in 1976. Alongside him is Yoriko Anno, a student of his who secretly has a crush on him.


A 34-year-old university professor who was originally a resident of Hanuda in his childhood. When he was 7 years old, he lost his parents during an earthquake caused by the failure of the ceremony to revive Datasushi.
Tamon and parents

A young Tamon and his parents in 1976, shortly before the landslide

He wondered the destroyed remains of Hanuda, calling out for his parents. His tragedy is documented in a newspaper article. At some point after this, he was adopted and went on to be a professor at a university, where he gained the romantic attention of one of his students, Yoriko Anno. He went to Hanuda in search of discovering the cause behind his parents’ deaths 27 years ago, accompanied by Yoriko.

They arrived in Hanuda in Day 1. When they arrive at Hanuda by car, Tamon senses that something is wrong, and asks Yoriko to stay in the car. However, Yoriko got out when she felt that she was being watched by someone. They briefly experience Sightjacking each-other, both confused about what is going on. Through Tamon’s instructions, they sneak their way through a small village, hearing the school broadcast of Harumi via radio. Continuing their journey, Tamon is shocked and appalled that Yoriko drank some of the red water despite his protest. They hear the roar of the Shibito Brain occupying the area, and killed it before moving on. 

At around 10:00am on Day 2, Yoriko and Tamon are by a stone bridge. Yoriko finds Tamon’s name imbedded in one of the rails, leading to Tamon confessing his true purpose behind going to Hanuda and apologized that he dragged her into this. Yoriko says that he did not need to apologize, since she came to Hanuda because of him. They laugh before Yoriko is shot by a sniper Shibito, sent falling down onto the banks below the bridge. Making his way down to Yoriko, he promised to come back to her while he dealt with the sniper.
Tamon vs Akira

Tamon, not recognising his assailant, faces off against Shibito Akira

Yoriko says that despite being shot, she does not feel any pain. Tamon states that, due to consuming the red water, she is slowly turning into a Shibito. Tamon set fire to a wooden bridge the sniper was near, preventing either person from crossing. He corners the Shibito at his original sniping point, and defeats him, only to discover that it is Akira Shimura, his old neighbour. By the time he gets back, Yoriko is gone; she and Kyoya Suda had been taken away by Shiro Miyata.

Tamon makes his way to the Miyata Hospital, confronting the Shibito inhabiting it. This culminates him finding a picture of Hisako Yao back in 1964, who has not aged, and fought the Shibito Brain Mina Onda. Defeating Mina, he discovers Yoriko’s glasses, and fears for the worst. Tamon pieces together that Hisako is trying to commence a ritual that will summon Datatsushi, and sets off to prevent the ritual from occurring.

During Day 3, by the time he gets to the Nest, it is too late; Miyako Kajiro has been sacrificed, unleashing the spirit of the alien god. In the confrontation, Tamon reunites with Yoriko and meets Kyoya Suda and Kei Makino. Datatsushi’s physical form is not complete, since the remainder of Miyako’s blood lies within Kyoya. The creature tries to take Kyoya, but he, Kei and Tamon are sent to the level below.

Regaining consciousness in a pool of red water, Kyoya and Tamon attempt to penetrate the Nest again, leaving Kei behind. Kyoya and Tamon team up to break through the Nest, but along the way, Tamon cuts off the electricity in the building so as to sneak past a sniper Shibito, while Kyoya, aided by Miyako’s spirit, defeats two Spider Shibito and found a safe place to hide. Tamon begins to feel the effects of his transformation into a Shibito – he convulses on the floor in pain, looking pale. He hears the Shibito-sounding voice of Yoriko, and sees her with an unnatural smile as she runs towards him to reunite. However, Datatsushi appears between them to attack. Luckily, a wave of red water, brought on by the self-sacrifice of Shiro Miyata, flooded the three, separating Tamon and Yoriko from each-other and Datatsushi.

Back on the ground afterwards, he once again feels himself slowly transforming, then hears the voices of his mother and father. As if in a trance, he makes his way to his house after following their voices. Along the way, he fights off the Shibito-transformed Naoko Mihama and Reiko Takato, as Spider and Brain Shibitos, respectively.

Tamon and not-so human parents

Tamon finally reunites with his parents, unaware that they are Failed Shibito

Once at his old house, he is shocked to discover his mother and father standing right in front of him, both happy to see their son after nearly 30 years of being apart. They looked as they were at the time of the landslide that killed them. Overwhelmed with happiness, Tamon embraces his parents, who in turn embrace him. Unknown to him, due to his continuing transformation, his parents are very different compared to what they are to his eyes. They are Shibito who resist the siren, call of Datatsushi, and rot away while retaining their humanity and love for their son.
Tamon and Failed Parents

The Takeuchi family, reunited

Days later, Tamon, still human, is still in the same position, not wanting to be away from his parents again. His parents have done nothing to him, just wanting to be with their son again. Yoriko suddenly bursts into the house and beats Tamon’s parents with a baseball bat. She drags him away, telling him that "it's no time to be playing happy familys". Due to the red water he involuntarily came into contact with, Tamon is unable to leave the alternate Hanuda dimension. It is unknown what his fate is.


Tamon is dedicated—if not obsessed—with finding out the truth behind his parents’ deaths. When he finally reunites with them, he cries in happiness, and wants to be with them still when Yoriko drags him away from them.

He wishes for the safety of others, as he promises Yoriko to come back for her after dealing with Shibito Akira. In Day 3, he states to Kyoya that, in the time of crisis Hanuda is in that Datatsushi is resurrected, it’s best to make sure that one looks out for themselves, although he’s sure that Kei should survive, as he tells Kyoya not to worry about him – part of this might be due to how weak Kei is as a result of their fall, so Tamon might not want there to be anything to slow them down. Tamon’s willing to team up with others if it means that they can penetrate the Nest and try and sort out how to set things straight.


In gameplay terms, Tamon almost always carrying his revolver. At the start of Day 3, he lost this but instead gains a new weapon, the Steel Pipe. To this end, he is always equipped with that and so he is never really defenseless (apart from one instance). Interestingly, Tamon is the only character who shares his level with another (Kyoya Suda). He is also accompanied by Yoriko Anno for the majority of the game until he lost her in the middle of Day 2.

He is one of the toughest characters in the game alongside Akita and Shiro.


  • Teacher of Yoriko Anno
  • Former neighbour of Akira Shimura; shoots the Shibito-turned Akira when Yoriko is shot by him
  • During Datatsushi’s resurrection, meets up with Kyoya Suda and Kei Makino; later leaves Kei and teams up with Kyoya to penetrate Nest
  • Witnesses Datatsushi’s resurrection; is almost attacked by his incomplete form
  • Hears Harumi’s pleads from school via radio tower
  • Realizes that Hisako Yao is trying to resurrect Datatsushi
  • Confronts and incapacitates Beetle Shibito Naoko Mihama
  • Confronts and incapacitates Shibito Brain Reiko Takato




Mission 1

Mission 2

Day 1 02:00

Harayadori, Yabay settlement

Reach the road to Kurawari with Yoriko Anno

Listen to in-school announcement while on top of the fire tower

Day 1 20:00

Hirunotsuka, spring at the Mizuhiroku shrine

Drive away Shibito Brain

Find item dropped by Yoriko Anno and drive away Shibito Brain

Day 2 10:00

Janokubi valley, the bridge of return

Defeat sniper

Remember Akira Shimura

Day 2 18:00

Miyata clinic, ward 2, 1st floor entrance

Pick up Yoriko Anno’s trail Find album

Day 3 03:00

The Nest, near level 4

Arrive as Kyoya Suda at the gate to the Nest’s core

Penetrate gate to the Nest’s core as Kyoya Suda

Day 3 22:00

The Nest, near level 3

Find charred remains

Reach Takeuchi residence


  • Appears in the timeframes Day 1, Day 2 and Day 3.
  • His role as professor, noting the Shibito's insect-like patterns, and eventual knowledge of the truth of Hanuda are traits given to Sam Monroe in Siren: Blood Curse.
  • Tamon's first Day 3 level starts a tradition of a team-up level that is present in every game of the series.
  • Tamon is the only character whose fate—whether or not he remains a human or ultimately turns into a Shibito—is never revealed.
  • Tamon’s interactions with his Failed Shibito parents presents another side effect of the transformation – seeing other Shibito as normal people. However, he never experiences seeing the angel-like patterns surrounding him, nor do any Shibito ignore him.