How to make Roka and Lyphia/Evelyn join wil on NG+ ?

i have the message box to start new game + using the current data when clear to make them join...
but i never able to see it....

i'm able to make Lily, Leguna and Stone Golem Join with no problem at all...

do i need to start new game with all the character included ? or there is any way for them to join?

You can only play with them in your third game.

You need to clear a NG+ first (= your second game) doing all their events and saving the data, then you can start a NG+ with such data.

i know about that...

i'm currently on my 5th game... and already unlock them 2 times.. and in my current gameplay is already unlocked too...

but how do i exactly make them appear as my party?

by ticking ON at "New Game+ Bonus - Party Member" or is there any way beside that?
since if i do that both of them will only appeared as "CLONE UNIT"

is there any way beside that?

Like Lily, Leguna and Stone Golem, they will remain as clone units throughout play (except during their respective quests).

i have played the game 2 times but im not getting demonfolk rumours quest and gold alchemy events(taken data from previous game) i have tried everything possible and saw many posts but i didnt get the solution.

Firstly pvskrishh you don't need to post the same question to 3 different posts, that's considered bad form.
People will try to help you if they can.

You say you've played 2 times, on the second play did you meet any on the new characters at all?
There are 16 basic characters that are not NG+
The NG+ characters do normally have an event to trigger meeting them. (Maids, Mylen, Phinilly)

Did you play the game normally or did you use cheats to modify your save file?

If you want someone to help, you may need to put your savedata somewhere that can be checked.
You would need to include the RT.BAK, RT.DAT, SAVE.BAK, SAVE.DAT files as well as current play files.
A SAVExx.DAT & SAVExx.STH of a current Chapter 1 as well as a save from the end of Chapter 9 of your last play.

if you completed all their events, including the hot spring one and you got the not that "they are available for next game using this save file". Similar to Roka, and you still can't get them.
Then you got a save file issue i guess