Akatsuki and Nanami's adoptive father, and also their superior in the secret organization.
| Family relationships | Akatsuki and Nanami's adoptive father |
|---|---|
| External professions | Cleaning company staff |
| Organizational relationships | Akatsuki and Nanami's superior |
Adoptive father and superior
Ryunosuke dotes on the two adopted children. Being a cleaning company employee serves as a cover for his public identity; he actually works in a secret organization, directing the work of Akatsuki and Nanami.
Research collaboration with the original game Moyu Line
Ryunosuke and the academy chairman, Atsuki, discussed a rampage suppression study and approved Moyu's plan to produce patches, train Akatsuki, and record low link value ability states.
The father responded to the original game's Nanami route
After Nanami was adopted, she still wanted to pay him income, but Ryunosuke refused, gave her pocket money, and hoped she would attend school and make friends as usual.
Mayu route: Facing her son's unilateral decisions
Akatsuki proactively revealed her secret to help Mayu and asked Ryunosuke for support. After successfully suppressing the rampage, Akatsuki was assigned to guard the school and cooperate on development, but was also given a pay cut for his unilateral actions.
Moyu Route: Report after infiltration
In the Mayu route, Ryunosuke listens to Akatsuki's report and apology regarding the investigation of the research building. After Nanami takes the phone and says he's also participating in the operation, he says he'll continue investigating Kotori's situation.
Hazuki Line: Ryunosuke's permission to date
In the Hazuki route, when the Nijoin family investigates Akatsuki, Ryunosuke gives a positive evaluation. He emphasized that the organization's identity must be kept confidential and that resignations should not be made lightly, and also agreed to Akira and Yuzuki's relationship.
Related entries
- Featured works:RIDDLE JOKER
- Adopted son:RIDDLE JOKER
- Adopted daughter:Nanami Arihara (RIDDLE JOKER)
- Subordinate of the secret organization:RIDDLE JOKER
- Subordinate of the secret organization:Nanami Arihara (RIDDLE JOKER)
- Negotiation partners for the Runaway Suppression Project:Atsuki Ise (RIDDLE JOKER)
- An adopted daughter who demands an ordinary childhood life:Nanami Arihara (RIDDLE JOKER)
- Subordinates and adopted sons who ask for support to help Moyu:RIDDLE JOKER
- Moyu Route: After investigating the research building, listen to her phone call for instructions:Nanami Arihara (RIDDLE JOKER)
- Hazuki Line: She allowed her to date and reminded her son to keep it secret:RIDDLE JOKER
References
- RIDDLE JOKER: Official Japanese character introduction
- HIKARI FIELD: RIDDLE JOKER character introduction in Chinese
- eddiiee: [Riddle Joker] Mayu√ Play Diary - Spoilers Included
- eddiiee: [Riddle Joker] Nanami√ Play Diary - Spoilers Included
- eddiiee: RIDDLE JOKER Yuzuki route hands-on diary
Data compiled on: 2026-10-07.