Man, I'm just gonna say it. STOP MAKING MULTI PART MANGA/HUA WITH DIFFERENT CHARACTERS AS THE PROTAGONIST.
It literally never works. Off the top of my head, this one, Tokyo ESP, and Negima!/UQ Holder all did it and all of their second parts SUCK compared to the original (although Negima! had its own unique circumstances, but my point still stands.)
You lose so much of the investment in the story when you swap to a new mc's PoV. I dont care about jyi in the slightest, all I want is to know what happened to Regis and Serin. This holds true in every manga that swaps mc's - All i care about is the flashbacks to the original cast.
A good example of one that has multi parts that I did care about was The Breaker/ TB: New Waves. Although i don't really like a lot of what they did in the second part, I was still invested in the MC's story and situations, and I doubt I would have if they had swapped PoV's to a new disciple under Goomoonryong or whatever.
Anyways, enough ranting. Thanks so much BAP for finishing this up, you're the GOATs. Hopefully part 3 will be way better.