|Relatives||Hatakiyo Ketouin (Grandfather)|
Hiroyuki Ketouin (Twin brother)
Yuika Ketouin (祁答院唯香 Ketōin Yuika) is a character featured in Danganronpa: Togami. She's the granddaughter of the Ketouin Conglomerate's current head, Hatakiyo Ketouin. She's the twin sister of Hiroyuki Ketouin.
Yuika is a very small young lady who wears a Japanese Sailor Fuku.
Yuika takes things at her own pace and speaks very softly. She is a very forgettable person, seemingly a shadow to her brother as she is very silent.
Volume 1 - Multiple Counts of Attempted World Domination
Chapter 1 - Byakuya-sama is God
Yuika first appeared when she and her twin brother, Hiroyuki, came to save Byakuya Togami and Shinobu Togami from Sonia Nevermind's soldiers attack with their Mercedes-Benz. She easily beat Sonia's soldiers using an electric guitar. After she and Hiroyuki took Byakuya and Shinobu away, it's revealed that their true objective is to find the Secret to Togami's Family Prosperity.
Yuika and the others soon encounter Sakura Ogami who was sent by Hope's Peak Academy to capture Byakuya, whom they mistake as the person who broadcasted the World Domination Proclamation. After almost being crushed by Sakura, they managed to escape at the last second as Hiroyuki activated his Mercedes' jet engine and eventually they escaped the powerful Sakura and soon arrived at the center of Prague where the people demonstrated, protested the World Domination Proclamation that could disturb the peace.
Yuika and the others arrive at the demonstration location. One of Yuika's friends, Taeko Kanai reported back to her after she chased Sonia's crew. Due to Taeko's abruptness, the demonstration spotted them and begin to surround them, giving no escape route. Later, Sonia reappeared with her armored car in a pincher attack along with Kazuichi Soda's flying machine gun to destroy Yuika and the others, who were inside Hiroyuki's Mercedes. Yuika eventually escaped after Byakuya learned and threw his old glasses that had been set with a transmitter to track him down.
Yuika and the others eventually escaped the murderous events in the center of Prague and arrived in Škoda Auto factory that belonged to Ketouin Conglomerate.
- “You may call me Yuika.”
- The electric guitar that Yuika owned is Gibson Explorer.