I'm trying to find this manga about this elementary school girl who has a crush on her classmate. The only things I remember are that she was a tsundere and there was a chapter where she didn't like peas but pretended she did. Her crush saw that she didn't like them so he offered to eat her peas for her. At the end she decided that she was gonna eat the peas with him and they ended up both eating them and finding them gross. It was absolutely adorable!
IRL, some brats did it the same way adult do on their marriage ceremony in the related gov's departement.. i mean wit a real seal and other things despite only being a pair of BF & GF..... things m8 seems adorable in manga/arts related stuff, but horrible at IRL...