A Beautiful Girl I Used to Be Close With Overseas Came to Stay With Me as a Homestay Guest and Started Pressuring Me, Saying, “I Won’t Let You Forget Me.” I Thought We Weren’t Dating Since I Hadn’t Confessed My Feelings, but She Was Actually Suffering Because She Thought I’d Dumped Her

Source: https://kakuyomu.jp/works/2912051598917319858

Synopsis

A yandere whose love is just too heavy has crossed the sea to find me—!

To live an ordinary college life, keeping a low profile and blending in.
Ousaki Rintaro, who has a strong attachment to being “ordinary” due to past experiences, had a modest plan—
but it was quickly shattered by the news that his childhood friend from his time living in Germany, Ellis Wiegert, was coming to stay with him.

Ellis Wiegert.
The girl who was closer to Rintaro than anyone else when he lived in Germany.
At first, she was shy and isolated, but as she spent time with Rintaro, she gradually began to fit in with those around her.

However, when Rintaro entered middle school, he had to return to Japan.
They exchanged letters for a while after parting ways, but as he settled into his new life, Rintaro’s connection with Ellis gradually became a thing of the past.

But for Ellis, that wasn’t the case.
As contact from Rintaro dried up, Ellis believed she had been forgotten and fell ill.
She came to believe that Rintaro had forgotten her because she lacked charm.

“I’ll become more and more charming, so Rintaro will never forget me again…!”

Elis worked tirelessly, constantly refining her Japanese, her hair, her clothes, and her mannerisms—
and eventually, she was accepted into the same university as Rintaro and came to live at his house as a homestay student.

To enter Rintaro’s life once again.
To become the woman he could never forget, this time for good.

A heavy-duty cohabitation rom-com in which Rintaro, who craves a normal life, finds his escape routes cut off—both at home and at university—by his childhood friend whose love is simply too overwhelming.