Kimetsu no Yaiba - Utopia in one's mind's eye (Doujinshi)

There's word going around that people are vanishing after entering the mountains in a nearby village. The demon hunters suspect a demon may be behind this.Sanemi and Genya make up the second team to investigate, but they later find themselves trapped in a world where desires come true. Can the two brothers, who haven't reconciled yet, work together to escape this Utopia? TL note: This can be read as a platonic ending.