Tomoko just has really low social IQ, unfortunately, which compounds with her slightly abrasive personality. But she sometimes she really does mean the best and really tries, which is very endearing.
"I just came to the beach, why do I have to die?" LOL
Also jesus Tomoko's expression when she saw Yuu. Yuu is like the most tolerant friend ever holy crap, Tomoko just confess already XD
Also you can kinda tell she learned her English from inappropriate sources...
Tomoko got a heatstroke running around to look at handsome dudes and pretty girls LOL god the way she perked up when people mentioned "huge boobs" and started running is hilarious