Limitations: small sample, 8-week duration, single institution. Replication with lower proficiency levels and longitudinal retention tests is needed. Marugoto Plus is not a replacement for the original series but a pedagogical enhancement that responds to digital-native learners’ needs. By layering AI conversation, gamified kanji, and VR culture onto Marugoto’s solid foundation, educators can achieve higher spontaneous output and engagement without sacrificing curricular rigor.
[Additional references would include: Rasa documentation, Immerse VR efficacy studies, WaniKani retention data, etc.] Sample Marubot dialogue (Unit: “Asking for directions”) Appendix B: VR quest design template for Marugoto Plus Appendix C: Survey instrument and raw data tables Correspondence: [generated academic contact] Conflict of Interest Statement: The author declares no competing interests. Funding: This research received no specific grant from funding agencies. marugoto plus
| Unit Phase | Original Marugoto Activity | Marugoto Plus Enhancement | |------------|----------------------------|----------------------------| | Preparation | Vocabulary list & CD audio | Gamified kanji battle (Anki + leaderboard) | | Core 1 | Dialogue model (CD) | Interactive role-play with Marubot (AI voice chatbot) | | Core 2 | Pair work (scripted) | Unscripted VR scenario (e.g., lost in Shinjuku station) | | Cultural | Reading & worksheet | VR cultural quest (e.g., attend a matsuri and use polite requests) | | Can-do check | Self-assessment sheet | AI-generated feedback report + teacher dashboard | By layering AI conversation, gamified kanji, and VR
