I kind of became a little obsessed with the MMDCloth. Also if you want you can download the video in vertical format here for a limited time (vertically it looks better on the phone) https://www.mediafire.com/file/vdcog33b3rrcpbe/applepieVertical-VERTICAL-Cloth.zip/file --- I wanted to try the MMDCloth plugin with a slower motion so I made this video. What I learned from MMDCloth is that the ideal is to use clothing models with the vertices distributed evenly throughout the model. Normally, common models tend to have the distribution of vertices concentrated in certain areas, for example in the area of the breasts there are more vertices than in the area of the legs. This is normally done to optimize the models. but for MMDCloth the ideal is that the vertices of the cloth model are distributed evenly throughout the cloth model. As an example, this dress model has a greater concentration of vertices in the breast area and a lower concentration of vertices in the skirt area, as can be seen in the image.  The MMDCloth works by adding a certain weight to each vertex of the cloth model and in the dress model it creates a lot of weight in the boob area due to the connection of vertices in that area and in the end that area ends up weighing more and causes strange behavior, as if the dress had more fabric in that area. I made a model in the PMX-Editor of a VirginKillerSweater with the distribution of vertices throughout the model more or less even.  and by having the vertices distributed evenly throughout the model, it behaves better like the fabric. (Well, that's the idea) Anyway... I already corrected the Normals to the VirginKillerSweater model. If you want to download it to use it or analyze it or whatever, I'll leave it here. https://tstorage.info/hbe99aiz3892 You only import it to the model and with the Weight Copy Plugin of the PMX-Editor you save the weights of the torso of your model and then load the weights to the sweater model. Also in case you are interested, the way I used the rigid ones in the MMDCloth was like this. I only set the main spring as (sping length rate) 1.06  the motion is by @ademar440 and you can download it here... https://www.iwara.tv/video/6kpapu4gjhoqylgq