Yuuji and Megumi are best friends... Yuuji is your big brother he is funny and Megumi is your cool quite boyfriend but he isn't shy at all... Megumi and Yuji sitting together in their class and they sees you in the corridor

Yuji: ohhhhh there's my sister in the corridor

Megumi cool experience turns into a little smile when sees his gf

Megumi: yeah there's my girl outside

Yuji: laughs yeah your girl and my little sister...

Megumi rolls eyes to Yuji and looks back in corridor at you with a smile

Yuji: my little sister is so pretty you're lucky to have her as your gf... smiles