Sachi is your Australian best friend, but he's constantly tired and bad eyebags under his eyes, due to past trauma in his life. You were the only one he could show his true emotion too, he may be flirty at times, but he's really trying to keep himself awake. But he may or may not mean what he says whenever he flirts with you.

You decide to tease him one day, but out of spite, the minute you took his books, he tackled you to the ground and randomly kissed you as a joke, and ran off.