Natsuhiko Amakawa (Root Double -Before Crime * After Days-)

Sensitive high school students who dislike group activities; His mother, Miyoko Amakawa, is a busy scientist who lives almost alone.

Additional information
Brief evidence for the presentation	Yeti Character Main Text (Firsthand)
Dubbing evidence	2011 Xbox 360 Actor Media Release (Second)
Japanese voice acting was released for the Xbox 360 version	The market comes with brilliance and grandeur

Root Double -Before Crime * After Days- identity

Sensitive high school students who dislike group activities; His mother, Miyoko Amakawa, is a busy scientist who lives almost alone.

In the 2012 original PC C route, BC intervened in the accident Watase experienced, while the D route continued to enter companions' memories and repair the parts maliciously affected. After escaping, he and Watarase face another choice over how to protect Yuri.

Heroes adream and face crises together

As a child, Xia Yan wanted to be a righteous hero on TV, but as an adult, he treated disasters and events as unrelated news to himself. General Tsukishima explains that when close people get caught up in a real crisis, Natsuhiko faces the choice of continuing to avoid the truth or facing danger himself.

Seven wonders of childhood investigation

As children, Xia Yan and others once seriously believed in the Seven Mysteries passed down in Luming City and were passionate about unraveling these rumors.

Original Xbox 360 version: LABO crash from nine years ago

Nine years ago, Xia Yan and Yuri were trapped together in LABO. This accident gave him the qualities to awaken powerful Communicator abilities.

Original Xbox 360 version: Rescue and time loss on Route A

In route A, Natsuhiko loses a lot of blood in the N area, entering a state of suspended animation by relying on mental overlap with Watase, barely maintaining his life. Watase must arrive before he dies; His ability to support is also a necessary condition for the rescue to reach Good.

On Route A, Watase's pointless searching delays rescue operations. Searching for Yuri's corpse takes six minutes, other mistake actions each take three minutes, totaling nine minutes of loss and killing Xia Yan; Clearing B first can avoid that six-minute search.

Original Xbox 360 version: Memories of route B and Qixi adjustments

In route B, Xia Yan's daily life comes from memories presented by Yuri through Senses Sympathy. One day of memory corresponds to ten minutes in reality, so before returning to reality, the hands of the broken watch advance by ten minutes.

Every year on July 7th, Xia Yan undergoes Yuri's memory adjustment, reducing the difference between the illusion before him and the real her. He saw this meeting as a test for the aftereffects of an accident nine years ago.

Related entries

Featured works:Root Double -Before Crime * After Days-
Xbox 360 version released Japanese voice acting:The market comes with brilliance and grandeur
Childhood friends:Yuri Kotono (Root Double -Before Crime * After Days-)
Childhood friends:Mashiro Toba (Root Double -Before Crime * After Days-)
Teachers at my high school:Ena Tsubakiyama (Root Double -Before Crime * After Days-)
Neighbor:Yoshihisa Ukita (Root Double -Before Crime * After Days-)
Mothers continuing BC studies to extend their lives:Miyako Amakawa (Root Double -Before Crime * After Days-)
BC continues to support his childhood friend:Yuri Kotono (Root Double -Before Crime * After Days-)
Companions who were once used for memory copying and whose help stabilized the mind were:Louise Yui Sannomiya (Root Double -Before Crime * After Days-)
Another protagonist making different endgame choices around Yuri's safety and himself:Kasagi Watarase (Root Double -Before Crime * After Days-)
Route C from his BC perspective:√Current
Yuri (formerly Xbox 360), who was trapped in LABO with her nine years ago:Yuri Kotono (Root Double -Before Crime * After Days-)
LABO (formerly Xbox 360), where he and Yuri were trapped nine years ago:LABO Sixth Research Institute
In route A, you must rush to Area N to rescue Watarase (formerly Xbox 360):Kasagi Watarase (Root Double -Before Crime * After Days-)
In route A, you must avoid losing nine minutes of time to save yourself: Watarase (formerly Xbox 360):Kasagi Watarase (Root Double -Before Crime * After Days-)
In route B, Yuri revisits daily memories with Senses Sympathy (formerly Xbox 360):Yuri Kotono (Root Double -Before Crime * After Days-)
Yuuri (formerly Xbox 360) adjusts her memories every Qixi Festival:Yuri Kotono (Root Double -Before Crime * After Days-)

References

Data compiled on: 2026-10-07.