This flame can be created with the following settings.
[Generate]
[Emit Count] 1
[Emit Time] 2
Enable "Loop"
[Rotate]
[Rotate Type] Newton Dynamics
[Random Range] Z:360
[Move]
[Translate Type] Newton Dynamics
[Speed：Initial Value] Y:1
[Random Range] X:0.2 Y:0.2 Z:0.2
[Scale]
[Scale Type] Newton Dynamics
Enable "Square"
[Initial Value] X:2
[Random Range] X:0.3
[Speed：Initial Value] X:0.2
[Blend]
[Blend Type] Semitrans Add
[Blend Alpha Type] Curve
Input key frame with [Curve] 「Timeline」as in the image below.
This will make the image gradually appear and disappear.
