I realise that's very optimistic if we are to consider AL as a precedent, but when you exclude the tragic aspects of the AL endings, it could be seen that there was a "happy ending" where the MC gets married, Liam gets back to full strength and falls in love, and the MC and his chosen LI go on to have a happy life.
As is often mentioned, this game has a lighter tone overall than AL and while there certainly is great potential to break a few hearts by the end of this, DPC doesn't seem to be above giving people a "happy(-ish) ending" if you do things in a somewhat "right" way. So maybe it will be possible to keep everybody alive in this one, to have good relations with ex-LIs, and to have a good life with the chosen LI(s) by following a specific path.
But, hey, a man can dream, can't he?
Arigon Can't you just edit your first post to say all that rather than multi-posting?