That house had a name

 At Nakashima Natsumi's apartment, Wakana glances at the drawings made by her younger sister. Though her sister hasn't coloured pictures yet, the images are nearly similar to her memories of that place. 

"It is nearly the same." Wakana traces the lines on the paper. "Sayuri, you are good at this."

"It would have been exactly the same if I was good enough." Sayuri heaves a loud sigh. "Wakana, do you think that we will be able to find this place?"

Wakana knits her brows. In her memory, Choi Minho should be around ten or eleven. Then, that incident must have happened a long time ago. This place might not exist now. 

"It's fine." Natsumi picks up one of the drawings. "This house might not be there anymore, but the mountain will be there. Wakana, note down anything that you remember about the surrounding -- the flowers, trees, weather, and anything else that stands out. I know a few people who are good at finding places."