I honestly don't understand what the problem with these people is, so what if you can't change the MC's name? He's Ren, actually calling him MC by itself is weird, because his name is Ren and he has his own story, he's not me, he's a character that we're just controlling and directing what he does. Just note that all choices are viewed in third person. There are a lot of successful games where protagonists have fixed names because the players understand that they are characters and not an avatar made for players to insert themselves into.
And about not being able to see all the routes in one play, I think it's even normal, it's a
visual novel after all and visual novels are made to be
replayed!
By the way, I liked this game and how it presents us with the story and characters very well written! I confess that I liked the Beach Episode! (Episode 7)
But I have a question, why none of the girls went to compliment Ren's swimsuit? After all, it would be great to know the girls' opinion about his suimsuit the same way he gave his opinion about their suimsuit!
PS: My favorites girls so far are Noriko and Shera!