Banri Tada

Having had a nearly fatal accident shortly after high school graduation, he lost all memories from before then. He spent a year recovering and has now entered law school.

Later on in the series, Banri begins to pity Kouko as she's always alone because everyone finds her beauty and wealth intimidating.

Banri is shown to a "Ghost" of himself watching over him before losing his memory.

In episode 7 of the anime, he and Kouko officially begin dating.

It is revealed that Banri and Linda were childhood friends who attended the same class in highschool. It is later shown that Linda is the primary reason for Banri's decision to attend a university in Tokyo, with her being the one who suggested it.

In episode 21 of the anime, Kouko breaks up with him.

In episode 23 of the anime, he fully regains his memories prior to the accident and forgets everything that happened after.

In episode 24 of the anime—with Koko's mirror as a catalyst—he remembers everything after the accident, meaning he gained his memories prior and after. The "ghost" of his past self disappears after finally hearing Linda's response.