I am looking for a manga that I do not remember the title of. This is all I remember:

• The mc befriends a guy and they're walking down a hallway and the friend says he has a best friend, mc is sceptical and friend replies "I do have one, we just walked passed him" and it's a dude who looks serious and stoic

• Mc wonders why the best friend isn't talking much. Friend suggests to exchange contact details to communicate. The moment they do, he gets a message and the style/tone of message looks like: "Sorry for being so rude! >_< I'm just very shy. I hope you can forgive me ^-^". Mc is shocked at the difference between the appearance and message.

• Best friend wonders why girls who he meets at mixers don't reply to him. Friend says he knows the reason why, only to be told it's because of the long words he uses and not because of the way he texts.

• They're at a cafe or restaurant, best friend is about to order coffee but the friend interrupts and orders the big fancy sundae that is on the menu. Waitress looks at them, thinking the best friend is being bullied.

• Sundae arrives, the best friend is eating it and the mc is talking. The best friend tells the mc that the sundae is missing something on it and the mc is frantically calling for a waitress. After, it shows the mc and friend chaotically talking to each other while the best friend is texting like crazy and the waitresses look at them in bewilderment.