After playing for more than 13 hours, I made it to the end eventually. When I played it at the first, I simply recognized the game as a liner one, nevertheless I found two branch point, satisfied my demand.
Thanks for all ur hard work, leaving me a unforgetful impression, and all its content is to my taste perfectly.
p.s. There exists a bug (a mini one even doesn't need to be revise) after each conservation during a battle, all the character card (or the panel? Dunno how to name it) at the bottom of the screen faded, and the resolution is to stick to "left" until the card reveal again.
(Wondering whether there are any better solutions)
p.p.s. How excited was I when I found the character from th1-5 popped up, even including Rin the one who "never existed"(hope this wouldn't be deifned as spoiler🙏)