Looks like it's still going on the pixiv. This was update 17, and it's now updated to 26. Each update looks like it's 2 or 3 strips as well. I'm not very good at navigating pixiv.
Since the gap's center passes through this lake, I was able to use it to find you.
Rather like an antenna.After this, it's simple: Use the same "hole" you went through to bring you back to this side.I'm just about to...All right, don't move a muscle....bring you back to Gensokyo.Thankfully, you made your way to the lake at your end.You--!Eh...!?No......wait!I still......promised Moko...What was that?That was a strange feeling just now...FLASHjump