Invisible Man and His Soon-to-Be Wife Vol. 4, The

BLIND TO EVERYTHING, EXCEPT FOR THIS!
Tounome, the kind and dapper invisible detective, and Yakou, the shy and bashful woman, are as lovey-dovey a couple as it gets. Between clumsily asking for kisses and sleeping over after a long day at work, Yakou has kept the butterflies in her stomach plenty busy, but Tounome seems like he’s getting cold feet… Will a heart-to-heart clear the way for them to travel through life together, or will it force them to part?!
Series Overview: Yakou Shizuka, a quiet and bashful woman, works at a detective agency. Her boss Tounome, who owns the company, is the gentlemanly type, kind and dapper, though he has an extra talent—he’s invisible! His special ability is perfect for detective work, but he quickly comes to find it doesn’t work on Yakou, who is blind and always knows if he’s near. Charmed, Tounome is determined to get her to date him and isn’t against using his many skills. Yakou’s quirky coworkers, a contrarian human man and a sisterly beastwoman, kindly watch over her as she stumbles and blushes through the uncharted waters of office romance.