Second.. here the MC is left to die by his friend, and finally leaves to know about the world and decides to return.
Title: Arifureta Shokugyou de Sekai Saikyou
And finally, here the MC already knows magic, is very powerful but the one summoned are only three people.. counting him.
He decides to leave his friends and look for a way to return both of them back to their world.
Title: Isekai mahou wa okureteru
From all the three, I find the last one the better. But everyone to their like.
If it's not the thing you are looking for, maybe you can tell me more details.
If you happen to have Tsuyokiss Full Edition, could you upload them to katfile or rosefile? Tsuyokiss Full Edition thread I would download from the mexashare links in this thread but a majority of them are dead