Tottemo Shounen Tankentai
とっても少年探検隊
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63A bonus chapter was included in the 8th volume of [Futaba-kun Change](https://www.mangaupdates.com/series.html?id=34959323453)
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A bonus chapter was included in the 8th volume of [Futaba-kun Change](https://www.mangaupdates.com/series.html?id=34959323453)