Wow, I honestly cannot express how awesome this manga is. There are weird bits, such as how quickly they got married etc, but this is a rom-com so it's negligible. All the characters, yes, even the annoying little sister character screaming that she should be the one married to Tsukasa are GOOD characters. Each of them are fleshed out and have their own personalities and isn't a cardboard cutout. The vanilla is just a plus to this magic.