natsuno-kanata ver1.2.3 is now available.
The main contents of the update are as follows

[Contents]
Three "cassette tape" items were added.
　Included BGM :
　　After the Rain on an Island" (Character BGM: Minamo)
　　Ivory Rose" (Character BGM: Hinase)
　　Parallel Sky" (Character BGM: Itsuka)

[Adjustment]
The probability of some scenarios occurring has been adjusted.

[Bug Fixes]
Fixed a problem in which the "Map" item was consumed even if the player turned back without searching.