Ok, it’s not a true visual novel but it’s got some visual novel/Love Plus thing going on. It’s neat! Dunno who the developers are but its published by Circle Ent.
One day, an old neighbor name Kasumi enrolled at your school, after moving back to the city. Your parents are acquaintances, so she gained the approval of staying at your home during enrollment. You have sweet childhood memories of the time spent with her. Simply face your friend, and the memories will return. The time you spend playing blackjack together, increases the connection between the two of you, and you will find out that she is the perfect match for you.