Similar to 初恋不倫〜この恋を初恋と呼んでいいですか〜

The Apothecary Diaries

Hope You're Happy, Lemon

Kisses, Sighs, and Cherry Blossom Pink

GE: Good Ending

I Made Friends with the Second Prettiest Girl in My Class

I Got Married to the Girl I Hate Most in Class

Guru Guru Pon-chan

Ane no Kekkon

The Cornered Mouse Dreams of Cheese

Guilty (manga)

Hitozuma no Kuchibiru wa Kan Chūhai no Aji ga Shite