Suki x Suki manga summary:
Touka Aizuki has a crush on her classmate, Ryoutarou Mimori. Even if she has feelings for him though, she never acts like it, instead being cold towards him every chance she can get. But one day, she realizes that she has turned invisible! Now with no witnesses, she can show her love towards Ryoutarou. Unfortunately…Ryoutarou is the only one that can see her!