Mi review will have ONE spoiler of episode 3, but even with this spoiler u can watch it perfectly, some friends even started to see the anime cuase I told them this spoiler and they loved it, so... read or not, ur choice.
What makes this anime so good is that it is based on a Main character (Tada Banri) that got an accident and because of that he has Amnesia. Because of the Amnesia, he can't face his old friends/family, cause he think they will spect the old Tada Banri, so he starts a new life alone traveling to an university on Tokio.
Everything is fine there, he even got a really nice girlfriend that he loves so much. BUT... he start to remember some things about his old self... he start to remember he loved another girl that is actually on the same university and they both are friends now.
So now he has a internal fight between his old feelings to that girl and his new feelings to his actual girlfriend.
This anime show you how cruel life is... u have someone that u love so much, and he loves u so much too, and... he forget u cause an accident. He forget the feelings and bond u both created... and u remember everything.
It breaks my heart so much dude... and that's why this anime is so good.
PD: Sorry if my english wasn't the best, but I just felt like writing a review for this anime cause I loved it.