Asking to have tea with ~てもいい


Grammar Explanation

ご注文はうさぎですか? » Volume 1 » Page 63

Since Cocoa and her friends ended up at the tea house where Syaro works, Cocoa wonders if it would be okay for them to have tea while there.

ココア:
「せっかくだから(ちゃ)してってもいいかな?」