Sakagami
Classroom of the Elite: Starting from Airi, Unlocking Countless Skills
Biodata
| Feature | Details |
|---|---|
| Name | Sakagami (坂上) 17 |
| Alias(es) | Sakagami-sensei; Mr. Sakagami 17 56 |
| Occupation/Role | Long-serving teacher, later retired from frontline teaching; Old System advisor 17 44 77 |
| First Appearance | Present at the inter-class collaboration briefing 44 |
Background / History
Sakagami is a source of information about the school's Old System. He explains that its original cooperation model was built on overly idealized assumptions: students used it for information extortion, and the resulting harm led the school to adopt a confrontational model. He also warns that accessing the restricted archives would activate clauses that had not yet been reinstated 20.
After leaving frontline teaching, he continues to work with Old System records and assessments. He sits on the judging panel for the uninhabited-island collaboration task and later provides information used in the island survival manual 44 50. His manuscripts help students apply dormant provisions, including mutual-trust weighting and the Sports Festival's random cooperation mechanism 65 68.
Sakagami subsequently guarantees Ryuen Kakeru's eligibility to test the Asymmetric Observer System. As an institutional advisor, he also introduces the Reverse Evaluation Clause for cross-grade collaboration and recommends Self-Reverse Evaluation for the Comprehensive Ability Assessment Test 56 57 77 80.
Appearance
Sakagami is described as gray-haired 44.
- His handwritten guarantee notes use a distinctive Slender Gold script 56.
- At the island-task briefing, he keeps an Old System record and a cup of unsweetened black tea beside him 44.
Work with the Old System
- Restricted records — Explains why the old cooperation model was frozen and the consequences of reopening its archives 20.
- Collaboration criteria — Leaves a review template stating that a joint Autumn Festival booth can earn up to one and a half times a standard booth's score, provided it cites mutual-trust weighting repeatedly and the participating classes have a record of genuine friction 65.
- Asymmetric Observer System — Provides the guarantee used to recommend Ryuen as the system's first test observer. The Student Council approves the recommendation 56 57.
- Reverse Evaluation — His cross-grade proposal allows lower-year students to assess upper-year students' collaborative attitude, information transparency, and fairness in resource allocation 77.
- Self-Reverse Evaluation — Recommends adding a self-assessment rule to the Comprehensive Ability Assessment Test 80.
Relationships
- Kanzaki Toru — Kanzaki seeks Sakagami's knowledge of the old school system and later studies his manuscripts and handwritten notes 17 65.
- Ryuen Kakeru — Sakagami advises him on Shared Pool Allocation, corresponds with him about his literature review, and guarantees his Asymmetric Observer test appointment 43 48 57.
- Shiina Hiyori — Shares information with her about the anonymous “&” signature found in Old System records 60.
- Kushida Kikyo — Kushida finds his draft guarantee for the Asymmetric Observer System and signs its staff-recommendation field as “&” 56.
Notable Quotes
“The maximum score for a joint booth proposal is one and a half times that of a standard booth.” 65
“Hardest to Assess Yourself” 81