This manga's great save for three crucial problems: 1. It's short. It's a short read. Probably for the best that it's too short rather than too long, but it's short nonetheless. 2. It sets up its premise and the dynamics between characters very early on, then it just... stays that way. No progress, no changes. It's just "Today I'm going to make her like me", succeeding, but then not knowing because the girl doubles over her efforts to act like a mom- partly because she's not clear on what she's feeling, and party to avoid confronting it. 3. The ending: It takes a Deus ex machinain the last chapters to fix the stalemate the author's set up. The boy's dad literally shows up without warning for a couple of days, basically tells them both to get together, they do, and he leaves for over a decade. This is followed up by a chapter of filler, and the last chapter is just a massive time skip of 10-12 years where they're married.